function Demos_getDemo( demo ) { var value = "None"; switch( demo ) { case "A1-01": value = "MASSES - KILOGRAM AND POUND"; break; case "A1-02": value = "MASSES - CHROME-PLATED"; break; case "A1-03": value = "DENSITY - VARIOUS BRICKS "; break; case "A1-11": value = "LENGTHS - METER AND YARD"; break; case "A1-12": value = "METRIC TAPE"; break; case "A1-21": value = "METRONOME"; break; case "A1-22": value = "HOURGLASS"; break; case "A1-31": value = "VOLUME MEASURE DEMONSTRATION"; break; case "A1-32": value = "VOLUMES - SPHERICAL VS CYLINDRICAL"; break; case "A1-41": value = "DRAWING PUZZLE - INTERSECTING RODS"; break; case "A1-42": value = "DRAWING PUZZLE - HALF CUBE"; break; case "A1-43": value = "CROSSING RODS"; break; case "A1-51": value = "SKATEBOARD"; break; case "A2-01": value = "CARTESIAN COORDINATE AXES"; break; case "A2-02": value = "XYZ AXES ON EXTENDED HANDLE"; break; case "A2-11": value = "CIRCUMFERENCE AND DIAMETER - CHAIN ON CYLINDER"; break; case "A2-12": value = "SLATED SPHERE"; break; case "A2-13": value = "ELLIPSE DRAWING BOARD"; break; case "A2-14": value = "DISSECTIBLE CONE"; break; case "A2-15": value = "HYPERBOLOID FROM STRAIGHT LINES"; break; case "A2-16": value = "SADDLE POINT MODEL"; break; case "A2-17": value = "CLOSED CURVES AND CAPPING SURFACES"; break; case "A2-21": value = "MAGNETIC VECTOR BOARD"; break; case "A2-22": value = "MAGNETIC VECTORS - LECTURE HALL "; break; case "A2-23": value = "VECTOR PRODUCT"; break; case "A2-24": value = "TWO-DIMENSIONAL VECTOR ALGEBRA"; break; case "A2-31": value = "TRIGONOMETRIC FUNCTIONS FOR MATH REVIEW"; break; case "A2-32": value = "HEIGHT MEASUREMENT BY TRIGONOMETRY"; break; case "A2-33": value = "DIRECTION COSINES MODEL"; break; case "A2-41": value = "LINE INTEGRAL MODEL"; break; case "A2-42": value = "INTEGRAL MODEL"; break; case "A2-51": value = "PROBABILITY BOARD - PROJECTION"; break; case "A2-52": value = "PROBABILITY DEMONSTRATOR"; break; case "A2-53": value = "DICE - LARGE"; break; case "A2-61": value = "EXPONENTIAL INCREASE - CHESSBOARD AND RICE"; break; case "A2-62": value = "GIBBS PHENOMENON AND CAUSALITY"; break; case "A2-63": value = "CALCULATOR WITH TV"; break; case "A2-71": value = "TOPOLOGY OF A STRING"; break; case "B1-01": value = "CENTER OF MASS - DISC SECTION"; break; case "B1-02": value = "CENTER OF MASS - LEANING TOWER"; break; case "B1-03": value = "CENTER OF MASS - LEANING TOWER ON INCLINED"; break; case "B1-04": value = "CENTER OF MASS - BRASS BARBELL"; break; case "B1-05": value = "CENTER OF MASS - PLUMBER'S HELPER"; break; case "B1-06": value = "DOUBLE CONE - LARGE"; break; case "B1-07": value = "DOUBLE CONE - SMALL"; break; case "B1-08": value = "STATES OF EQUILIBRIUM - CONE"; break; case "B1-09": value = "CENTER OF MASS - TRIANGLE"; break; case "B1-11": value = "BALANCE MAN"; break; case "B1-12": value = "CENTER OF MASS - HINGED STICK PARADOX"; break; case "B1-13": value = "CENTER OF MASS - FORK AND SPOON ON"; break; case "B1-14": value = "CENTER OF MASS - BOTTLE"; break; case "B1-15": value = "TOPPLING CYLINDERS"; break; case "B1-16": value = "CORBELED ARCH"; break; case "B1-17": value = "CENTER OF MASS - STICKS"; break; case "B1-21": value = "BALANCE BEAM - VARIATION ON THE TIGHTROPE"; break; case "B1-22": value = "CENTER OF GRAVITY USING TEETER-TOTTER"; break; case "B1-23": value = "CENTER OF GRAVITY - WALKING THE PLANK"; break; case "B1-24": value = "CENTER OF MASS - CARTS ON BALANCE "; break; case "B2-01": value = "SUM OF FORCES IN A LINE"; break; case "B2-02": value = "SUM OF FORCES - SPRING SCALES"; break; case "B2-03": value = "EQUILIBRIUM OF FORCES - INCLINED PLANE"; break; case "B2-04": value = "VERTICAL FORCES - FOUR SPRING SCALES"; break; case "B2-11": value = "EQUILIBRIUM OF FORCES - OHAUS PROJECTION"; break; case "B2-12": value = "EQUILIBRIUM OF FORCES - BOARD BACKGROUND"; break; case "B2-13": value = "EQUILIBRIUM OF FORCES - LARGE PROJECTION"; break; case "B2-14": value = "SUM OF FORCES - LARGE ROPE VERSION"; break; case "B2-15": value = "ADDITION OF NON-LINEAR FORCES"; break; case "B2-16": value = "VECTOR ADDITION WITH ROPE AND STUDENTS"; break; case "B2-21": value = "CONCEPT OF TORQUE - TORSIONAL CHAIR"; break; case "B2-22": value = "TORQUE - PHYSICAL DEFINITION"; break; case "B2-23": value = "TORQUE CONDITION FOR EQUILIBRIUM"; break; case "B2-31": value = "EQUILIBRIUM OF TORQUES - WHEELS AND AXLES"; break; case "B2-32": value = "EQUILIBRIUM OF TORQUES - LARGE"; break; case "B2-33": value = "EQUILIBRIUM OF TORQUES - SMALL"; break; case "B2-34": value = "EQUILIBRIUM OF TORQUES - ANGLE BRACKET"; break; case "B2-35": value = "EQUILIBRIUM OF TORQUES ON METER STICK"; break; case "B2-36": value = "EQUILIBRIUM OF TORQUES ON METER STICK - ROTATORS"; break; case "B2-41": value = "ROBERVAL BALANCE"; break; case "B2-42": value = "ARM MODEL"; break; case "B2-43": value = "CRANE BOOM"; break; case "B2-44": value = "STABLE EQUILIBRIUM - COMPOUND SYSTEM"; break; case "B3-01": value = "LEVER AND LOADED WAGON"; break; case "B3-02": value = "LEVERS - THREE CLASSES"; break; case "B3-03": value = "LEVERS - WRECKING BAR"; break; case "B3-11": value = "PULLEY - HUMAN LIFT"; break; case "B3-12": value = "PULLEY - MECHANICAL ADVANTAGE"; break; case "B3-13": value = "PULLEY VS NO PULLEY"; break; case "B3-14": value = "EQUILIBRIUM PARADOX - SCALES AND PULLEY"; break; case "B3-15": value = "FOOL'S TACKLE"; break; case "B3-21": value = "CHISEL AS WEDGE"; break; case "B3-22": value = "SCREW JACK - HUMAN LIFT"; break; case "B3-23": value = "ENDLESS SCREW"; break; case "B4-01": value = "HOOKE'S LAW"; break; case "B4-02": value = "HOOKE'S LAW - COMPRESSING A SPRING"; break; case "B4-03": value = "SPRINGS IN SERIES AND PARALLEL"; break; case "B4-04": value = "SPRING AND STRING THING"; break; case "B4-11": value = "ELASTIC LIMIT OF RUBBER BAND"; break; case "B4-12": value = "ELASTIC LIMIT OF SOLDER SPRING"; break; case "B4-13": value = "ELASTIC LIMIT OF BALLOON"; break; case "B4-14": value = "ELASTIC LIMIT OF WIRE"; break; case "B4-21": value = "DEFLECTION OF BEAM - OPTICAL LEVER"; break; case "B4-31": value = "FAILURE OF WOOD IN COMPRESSION"; break; case "B4-32": value = "CAN CRUSHER - WALL STABILITY"; break; case "B4-33": value = "EGG CRUSHER"; break; case "C1-01": value = "CENTER OF MASS MOTION - BARBELL"; break; case "C1-02": value = "CENTER OF MASS MOTION - PLUMBER'S HELPER"; break; case "C1-03": value = "CENTER OF MASS MOTION - CLOWN"; break; case "C1-04": value = "CENTER OF MASS - BEAR ON TIGHT ROPE"; break; case "C1-11": value = "AIR TRACK - CENTER OF MASS PENDULUM"; break; case "C1-12": value = "AIR TRACK - CENTER OF MASS OF COUPLED"; break; case "C1-13": value = "AIR TRACK - REDUCED MASS"; break; case "C1-21": value = "AIR TABLE - TOPPLING STICK"; break; case "C2-01": value = "AIR TRACK - CONSTANT VELOCITY AND UNIFORM ACCELERATION"; break; case "C2-02": value = "AIR TRACK - DIRECT MEASUREMENT OF ACCELERATION"; break; case "C2-03": value = "AIR TRACK - UNIFORM ACCELERATION - INCLINED"; break; case "C2-04": value = "FREE FALL WITH PHOTOCELL GATES"; break; case "C2-05": value = "FREE FALL - USING FILMLOOP"; break; case "C2-06": value = "BALL DROP ON ROPE - EQUAL AND UNEQUAL INTERVALS"; break; case "C2-07": value = "FREE FALL - EQUAL TIME INTERVALS"; break; case "C2-08": value = "FREE FALL - STROBE PHOTOS"; break; case "C2-09": value = "FREE FALL WITH STROBE"; break; case "C2-10": value = "CONSTANT VELOCITY - GALILEO'S EXPERIMENT"; break; case "C2-11": value = "RACING BALLS"; break; case "C2-21": value = "BALLS DROPPED AND SHOT"; break; case "C2-22": value = "MONKEY AND HUNTER"; break; case "C2-23": value = "TRAJECTORY OF BALL - MODEL"; break; case "C2-24": value = "WATER DROP PARABOLA"; break; case "C2-25": value = "FUNNEL CART"; break; case "C2-26": value = "FUNNEL CART WITH MASS OVER PULLEY"; break; case "C2-27": value = "FUNNEL CART ON INCLINE"; break; case "C2-28": value = "TRAJECTORY OF BALL DROPPED BY WALKER"; break; case "C2-41": value = "VECTOR ADDITION OF VELOCITIES"; break; case "C2-42": value = "VELOCITY ADDITION WITH FILM LOOP"; break; case "C2-51": value = "KINEMATICS WITH ULI AND ULTRASONIC RANGER"; break; case "C3-01": value = "INERTIA - SMALL STEEL BALL"; break; case "C3-02": value = "INERTIA - TABLE CLOTH TRICK"; break; case "C3-03": value = "INERTIA - MASSES HANGING IN SERIES"; break; case "C3-04": value = "INERTIA - LEAD BRICK AND HAND"; break; case "C3-05": value = "INERTIA - PEN IN BOTTLE"; break; case "C3-06": value = "INERTIA - JENGA"; break; case "C3-07": value = "EULERS DISK"; break; case "C3-08": value = "ROTATING PLATFORM"; break; case "C3-11": value = "STRAW AND POTATO"; break; case "C3-12": value = "PENCIL AND PLYWOOD"; break; case "C3-21": value = "INERTIAL MASS CART"; break; case "C4-01": value = "AIR TRACK - NEWTON'S SECOND LAW"; break; case "C4-02": value = "AIR TRACK - A eq F/M"; break; case "C4-03": value = "ACCELERATION BY ITERATED BLOWS"; break; case "C4-04": value = "F eq MA WITH ULI AND FORCE PROBE"; break; case "C4-11": value = "ACCELEROMETER - BALL IN WATER"; break; case "C4-12": value = "ACCELEROMETER ON INCLINED PLANE"; break; case "C4-13": value = "ACCELEROMETER ON ROTATOR"; break; case "C4-14": value = "AIR TRACK - ACCELEROMETER"; break; case "C4-15": value = "HELIUM BALLOON IN ACCELERATED BOX"; break; case "C4-21": value = "ATWOOD MACHINE"; break; case "C4-22": value = "HORIZONTAL ATWOOD MACHINE"; break; case "C4-23": value = "ATWOOD MACHINE WITH HEAVY PULLEY"; break; case "C4-31": value = "AIR TRACK - THE ACCELERATION OF GRAVITY"; break; case "C4-32": value = "FREE FALL IN VACUUM - GUINEA AND FEATHER"; break; case "C4-33": value = "FREE FALL IN VACUUM - FEATHER AND BALL"; break; case "C4-34": value = "GALILEO'S EXPERIMENT - MASSES IN FREE FALL"; break; case "C4-41": value = "TERMINAL VELOCITY - BOTTLE IN TUBE"; break; case "C4-42": value = "TERMINAL VELOCITY - FEATHER"; break; case "C4-43": value = "TERMINAL VELOCITY - STACKED COFFEE FILTERS"; break; case "C4-51": value = "WEIGHTLESSNESS IN FREE FALL - MASS IN BEAKER"; break; case "C4-52": value = "WEIGHTLESSNESS IN FREE FALL - MASS IN CUP ON POLE"; break; case "C4-53": value = "WEIGHTLESSNESS IN FREE FALL - MASS ON SPRING"; break; case "C4-54": value = "WEIGHTLESSNESS IN FREE FALL - MAGNET AND KEEPER"; break; case "C4-61": value = "ACCELERATION ON A SCALE"; break; case "C4-62": value = "DROPPED SLINKY"; break; case "C5-01": value = "NEWTON'S THIRD LAW - STATIC DYNAMOMETERS"; break; case "C5-02": value = "SPRING AND PULLEY PARADOX"; break; case "C5-09": value = "BALLISTICS CAR"; break; case "C5-10": value = "AIR ROCKET"; break; case "C5-11": value = "AIR TRACK - ACTION-REACTION PAIRS"; break; case "C5-12": value = "BALLISTIC CANNON CARTS"; break; case "C5-13": value = "WATER ROCKET"; break; case "C5-14": value = "ROCKET TRIKE"; break; case "C5-15": value = "REACTION FORCE ON AIR BLOWER"; break; case "C5-16": value = "HERO'S ENGINE"; break; case "C5-17": value = "ROCKET BOTTLE"; break; case "C5-18": value = "FAN CART"; break; case "C5-19": value = "ACTION AND REACTION - INSTRUCTOR AND CART"; break; case "C5-20": value = "PUTT PUTT STEAM BOAT"; break; case "C5-31": value = "AIR TRACK - SAILING UPWIND"; break; case "C5-32": value = "SAILING UPWIND - HAIRDRYER AND SAILBOAT"; break; case "C5-41": value = "HOURGLASS PROBLEM"; break; case "C5-51": value = "BALLISTOCARDIOGRAPHY"; break; case "C6-01": value = "INCLINED PLANE - FRICTION BOX AND WEIGHTS"; break; case "C6-02": value = "INCLINED PLANE - FRICTION BLOCK"; break; case "C6-03": value = "INCLINED PLANE - FRICTION WITH 3 BLOCKS"; break; case "C6-04": value = "FRICTION DIRECTION ON INCLINED PLANE"; break; case "C6-05": value = "AIR TRACK - INCLINED PLANE FRICTION"; break; case "C6-11": value = "SLIDING FRICTION - LECTURE TABLE AND FELT"; break; case "C6-12": value = "SKIDDING AUTOMOBILE"; break; case "C6-13": value = "FRICTION BETWEEN GLASS SURFACES"; break; case "C6-14": value = "SOCIAL CLIMBER"; break; case "C6-15": value = "SOCIAL DESCENDER - FRICTION TOY"; break; case "C6-16": value = "SLIDING AND STATIC FRICTION"; break; case "C6-17": value = "FRICTION VS. PULLING ANGLE "; break; case "C6-21": value = "SUSPENDED ROD ON WATER"; break; case "C7-01": value = "AIR TRACK - ELASTIC COLLISIONS"; break; case "C7-02": value = "AIR TRACK - INELASTIC COLLISIONS"; break; case "C7-03": value = "AIR TRACK - SCATTERING WITHOUT CONTACT"; break; case "C7-04": value = "AIR TRACK - COLLISION VELOCITY MULTIPLIER"; break; case "C7-11": value = "COLLISIONS OF BALLS - EQUAL MASSES"; break; case "C7-12": value = "COLLISIONS OF BALLS - ONE LIGHTER MASS"; break; case "C7-13": value = "COLLISIONS OF BALLS - GRADUATED MASSES"; break; case "C7-14": value = "COLLISIONS OF BALLS WITH FLOOR"; break; case "C7-15": value = "COLLISIONS OF BALLS - 3 TO 1 MASS RATIO"; break; case "C7-16": value = "HAPPY AND UNHAPPY BALLS"; break; case "C7-17": value = "SUPERBALL"; break; case "C7-18": value = "COLLISIONS OF BALLS - ASTROBLASTER"; break; case "C7-21": value = "ENERGY AND MOMENTUM - COLLISION AND PROJECTILE"; break; case "C7-22": value = "COLLISION OF BALL WITH STUDENT"; break; case "C7-23": value = "MEDICINE BALL AND SKATEBOARD"; break; case "C7-24": value = "SILLY PUTTY"; break; case "C7-25": value = "SUPERBALL, VACUUM MUD AND WOOD BLOCK COLLISIONS"; break; case "C7-26": value = "BOUNCING PUTTY AND NON-BOUNCING SUPERBALL"; break; case "C7-27": value = "COLLIDING STEEL SPHERES"; break; case "C7-41": value = "DRY ICE PUCK COLLISIONS"; break; case "C7-42": value = "AIR TABLE - COLLISIONS OF PUCKS"; break; case "C7-43": value = "AIR TABLE - SMALL - COLLISIONS OF PUCKS "; break; case "C7-44": value = "COLLISIONS - HOVERPUCKS"; break; case "C7-51": value = "BALLISTIC PENDULUM - PELLET GUN"; break; case "C7-52": value = "BALLISTIC PENDULUM - LAB MODEL"; break; case "C7-53": value = "AIR TRACK - SPEED OF AIR GUN PELLET"; break; case "C7-54": value = "BALLISTIC PENDULUM - BOW AND ARROW"; break; case "C8-01": value = "GIANT PENDULUM"; break; case "C8-02": value = "GIANT PENDULUM FOR CLASSROOMS"; break; case "C8-03": value = "GALILEO'S PENDULUM"; break; case "C8-04": value = "HILL TRACK"; break; case "C8-05": value = "CONSERVATION OF ENERGY IN VERTICAL PROJECTILE"; break; case "C8-06": value = "PILE DRIVER"; break; case "C8-11": value = "INTERNAL VS. EXTERNAL ENERGY - SPRING-COUPLED SUPERBALLS"; break; case "C8-12": value = "JUMPING MASSES WITH INTERNAL SPRING"; break; case "C8-13": value = "BUNGEE JUMPER MODEL"; break; case "C8-14": value = "JUMPING CLAMP"; break; case "C8-21": value = "ROCK AND WASTE BASKET"; break; case "C8-22": value = "ENERGY CONSERVATION - SUPERBALL AND SOUNDING BOARD"; break; case "C8-23": value = "WORK DONE BY PUSHING ON WALL"; break; case "C8-31": value = "POWER - EXERCISE CYCLE"; break; case "C8-32": value = "POWER - CLIMBING LADDER"; break; case "C8-33": value = "POWER - USING GRAVITY"; break; case "C8-34": value = "POWER - INSTRUCTOR DRAGGING CONCRETE "; break; case "D1-01": value = "STROBOSCOPE AND FAN"; break; case "D1-02": value = "PELLET VELOCITY FROM ROTATING DISCS"; break; case "D1-03": value = "VELOCITY WHEEL"; break; case "D1-11": value = "CYCLOID - LIGHT BULB ON WHEEL"; break; case "D1-12": value = "ADDITION OF ANGULAR VELOCITIES"; break; case "D1-21": value = "ANGULAR VELOCITY - OBERBECK CROSS"; break; case "D1-30": value = "TRAJECTORY FROM CIRCULAR ORBIT - OVERHEAD PROJECTOR"; break; case "D1-31": value = "TRAJECTORY FROM SPIRAL"; break; case "D1-32": value = "TRAJECTORY FROM CIRCULAR ORBIT"; break; case "D1-33": value = "ROTATING MASS ON STRING"; break; case "D1-34": value = "ROTATING MASS ON SPRING"; break; case "D1-35": value = "CENTRIPETAL FORCE - ROTATING MASS"; break; case "D1-36": value = "AIR TABLE - CENTRIPETAL FORCE"; break; case "D1-37": value = "MUDSLINGER"; break; case "D1-38": value = "MAGNETSLINGER"; break; case "D1-39": value = "PENNY AND COAT HANGER"; break; case "D1-40": value = "CENTRIPETAL FORCE ON ROTATING RUBBER BAND"; break; case "D1-41": value = "ROTATING WATER BUCKET"; break; case "D1-42": value = "ROTATING WATER BUCKET WITH SPONGE"; break; case "D1-43": value = "INERTIAL FORCES - BALLS IN ROTATING JARS"; break; case "D1-44": value = "ACCELEROMETERS AND FRAMES OF "; break; case "D1-51": value = "BANKED CURVE MODEL"; break; case "D1-52": value = "FAIRGROUND ROTOR"; break; case "D1-53": value = "LOOP-THE-LOOP"; break; case "D1-54": value = "ROTATING MASSES IN SERIES"; break; case "D1-55": value = "ROTATING ELASTIC RINGS"; break; case "D1-61": value = "ROLLING VS. SLIDING"; break; case "D1-62": value = "CONSERVATION OF ENERGY IN ROLLING BODY"; break; case "D1-63": value = "MAXWELL PENDULUM - LARGE"; break; case "D1-64": value = "MAXWELL PENDULUM - SMALL"; break; case "D1-65": value = "YO-YO"; break; case "D1-81": value = "TRICYCLE"; break; case "D1-82": value = "ROLLING FRICTION"; break; case "D1-83": value = "SPOOL"; break; case "D1-84": value = "SPINNING CYLINDRICAL SHELL"; break; case "D2-01": value = "RING AND DISC ON INCLINED PLANE"; break; case "D2-02": value = "MISCELLANEOUS BODIES ON INCLINED PLANE"; break; case "D2-03": value = "CANS ON INCLINED PLANE - WITH AND WITHOUT"; break; case "D2-04": value = "MOMENT OF INERTIA RODS"; break; case "D2-05": value = "DUMBELL - VARIABLE MOMENT OF INERTIA"; break; case "D2-11": value = "HINGED STICK AND FALLING BALL"; break; case "D2-12": value = "TOPPLING CHIMNEY"; break; case "D2-13": value = "RACING PENDULA"; break; case "D2-21": value = "CENTER OF PERCUSSION - BAT AND MALLET"; break; case "D2-31": value = "OBERBECK CROSS"; break; case "D2-32": value = "AIR TABLE - LINEAR AND ANGULAR ACCEL OF A DISK"; break; case "D2-41": value = "MOMENTS OF INERTIA ABOUT 3 PRINCIPAL AXES"; break; case "D2-42": value = "MOMENT OF INERTIA - TORSIONAL CHAIR AND BOARD"; break; case "D2-43": value = "MOMENT OF INERTIA - TORSIONAL CHAIR AND WEIGHTS"; break; case "D2-51": value = "BICYCLE WHEEL PENDULUM"; break; case "D3-01": value = "MASSES SLIDING ON ROTATING CROSSARM"; break; case "D3-02": value = "MASS ON STRING - ORBITS WITH VARYING "; break; case "D3-03": value = "ROTATING CHAIR AND WEIGHTS"; break; case "D3-04": value = "ROTATING STOOL AND WEIGHTS"; break; case "D3-05": value = "ROTATING CHAIR AND BICYCLE WHEEL"; break; case "D3-06": value = "ROTATING CHAIR - HELICOPTER MODEL"; break; case "D3-07": value = "FLYING SAUCER"; break; case "D3-08": value = "FLYING PIG"; break; case "D3-11": value = "SWING - PUMPING"; break; case "D3-12": value = "SWING MODEL"; break; case "D3-21": value = "INVERSE SPRINKLER - GLASS MODEL"; break; case "D3-22": value = "INVERSE SPRINKLER - METAL MODEL"; break; case "D3-31": value = "AIR TABLE - TETHERBALL"; break; case "D3-32": value = "KEYWHIP"; break; case "D3-41": value = "AIR TABLE - RECTANGULAR PUCK "; break; case "D4-01": value = "GYROSCOPE WITH COUNTERWEIGHTS"; break; case "D4-02": value = "BICYCLE WHEEL GYROSCOPE WITH COUNTERWEIGHT"; break; case "D4-03": value = "BICYCLE WHEEL GYROSCOPE ON PIVOT"; break; case "D4-04": value = "BICYCLE WHEEL GYROSCOPE ON ROPE"; break; case "D4-05": value = "GYROSCOPE WITH GYMBAL RINGS"; break; case "D4-06": value = "ELECTRIC GYROSCOPE"; break; case "D4-07": value = "SUITCASE GYROSCOPE"; break; case "D4-08": value = "PRECESSION AND NUTATION OF GYROSCOPE - MODEL"; break; case "D4-09": value = "ZERO-TORQUE GYROSCOPE"; break; case "D4-10": value = "AIR GYROSCOPE"; break; case "D4-21": value = "SHIP STABILIZER"; break; case "D4-22": value = "MONORAIL CAR"; break; case "D4-23": value = "GYROCOMPASS"; break; case "D4-24": value = "GYROCOMPASS - MODEL"; break; case "D4-25": value = "GYROSCOPE - TOY"; break; case "D4-26": value = "GYROCOMPASS MODEL WITH ROTATING STAGE"; break; case "D5-01": value = "TIPPE TOP"; break; case "D5-02": value = "FOOTBALL"; break; case "D5-03": value = "FOOTBALL ROTATING ASYMETRICALLY - MODEL"; break; case "D5-04": value = "SPINNING BOOK"; break; case "D5-05": value = "CELTS"; break; case "D5-06": value = "FIDDLESTICK"; break; case "D5-07": value = "STABLE AND UNSTABLE PRINCIPAL AXES"; break; case "D5-08": value = "WINEGLASS AND OLIVE"; break; case "D5-11": value = "CORIOLIS EFFECT - BALL ON ROTATING PLATFORM"; break; case "D5-12": value = "CORIOLIS EFFECT - WATER JET"; break; case "D5-13": value = "FOUCAULT PENDULUM - MODEL"; break; case "D5-14": value = "FOUCAULT PENDULUM - 6 FT"; break; case "D5-15": value = "CYCLONE AND ANTICYCLONE MODEL"; break; case "D5-16": value = "FOUCAULT PENDULUM"; break; case "D5-21": value = "BALL ROLLING ON ROTATING DISC"; break; case "D5-22": value = "ROTATING PENDULUM"; break; case "D5-23": value = "ROTATING BEAD ON LOOP"; break; case "D5-24": value = "ROTATING PENDULA - LENGTH VS "; break; case "E1-01": value = "CAVENDISH EXPERIMENT - MODEL"; break; case "E1-11": value = "POTENTIAL WELL - MODEL"; break; case "E1-12": value = "MARBLE IN GLASS BOWL"; break; case "E1-21": value = "GRAVITATIONAL LENS MODEL"; break; case "E2-01": value = "WORLD GLOBE"; break; case "E2-02": value = "MEASUREMENT OF RADIUS OF EARTH"; break; case "E2-03": value = "CRATER FORMATION MODEL"; break; case "E2-11": value = "SOLAR PLASMA MODEL"; break; case "E2-12": value = "FUSION MODEL"; break; case "E2-13": value = "SUNSPOT MODEL"; break; case "E2-21": value = "PHASES OF THE MOON"; break; case "E2-22": value = "UMBRA AND PENUMBRA"; break; case "E2-23": value = "UMBRA AND PENUMBRA - EXTENDED SOURCE"; break; case "E2-24": value = "UMBRA AND PENUMBRA - COLOR FILTERS"; break; case "E2-31": value = "SOLAR SYSTEM MODEL"; break; case "E2-32": value = "EPICYCLE MODEL - PTOLEMAIC SYSTEM OF PLANETS"; break; case "E2-33": value = "RETROGRADE MOTION"; break; case "E2-34": value = "BASIC PLANETARIUM"; break; case "E2-35": value = "PLANETS - RELATIVE SIZES MODEL"; break; case "E2-36": value = "DENSITY STRATIFICATION - FORMATION OF PLANETS"; break; case "E2-37": value = "PLATONIC SOLIDS AND KEPLER "; break; case "E2-41": value = "TRANSPARENT CELESTIAL GLOBE"; break; case "E2-42": value = "TELESCOPE MODEL"; break; case "E2-43": value = "ROTATING STAR FIELD"; break; case "E2-44": value = "BINARY STAR MODEL"; break; case "E2-45": value = "ECLIPSING BINARY STAR MODEL - LIGHTS"; break; case "E2-46": value = "ECLIPSING BINARY STAR MODEL - SPHERES"; break; case "E2-47": value = "TWINKLING STAR"; break; case "E2-48": value = "NON-TWINKLING PLANET"; break; case "E2-49": value = "PULSAR MODEL - RADIOWAVES"; break; case "E2-50": value = "PULSAR MODEL - FLASHLIGHTS"; break; case "E2-51": value = "GRAVITATIONAL COLLAPSE - MODEL"; break; case "E2-52": value = "HYDROSTATIC EQUILIBRIUM IN STARS"; break; case "E2-53": value = "STELLAR EVOLUTION - HYDROGEN BURNING"; break; case "E2-54": value = "REFLECTING TELESCOPE - STRING MODEL"; break; case "E2-61": value = "GALAXY MODEL"; break; case "E2-62": value = "SPIRAL GALAXY - WATER ANALOG"; break; case "E2-63": value = "EXPANDING UNIVERSE"; break; case "E2-71": value = "AUDIOTAPE 1 MIN - MILLISECOND PULSAR"; break; case "E2-72": value = "AUDIOTAPE 14 MIN - NRAO PULSAR"; break; case "E2-73": value = "AUDIOTAPE 18 MIN - SOUNDS FROM "; break; case "F1-01": value = "FLUID PRESSURE VS. DEPTH"; break; case "F1-02": value = "FLUID PRESSURE VS. DEPTH - ANEROID GAUGE"; break; case "F1-03": value = "PASCAL'S VASES"; break; case "F1-04": value = "EQUILIBRIUM TUBES"; break; case "F1-05": value = "DOES WATER SEEK ITS OWN LEVEL"; break; case "F1-06": value = "WATER SEEKS ITS OWN LEVEL"; break; case "F1-11": value = "HYDRAULIC PRESS"; break; case "F1-12": value = "PASCAL'S LAW - COILED TUBE PARADOX"; break; case "F1-13": value = "CONSTANT WATER PRESSURE"; break; case "F1-14": value = "PISTON DIAMETER VS. TRAVEL - WORKING MODEL"; break; case "F1-15": value = "PRESSURE GLOBE"; break; case "F1-21": value = "LIPLESS STRAW"; break; case "F2-01": value = "ARCHIMEDES' PRINCIPLE"; break; case "F2-02": value = "CARTESIAN DIVER"; break; case "F2-03": value = "CARTESIAN DIVER - EXPLICIT VERSION"; break; case "F2-04": value = "BUOYANCY - SPHERE AND WATER"; break; case "F2-05": value = "BUOYANCY - BOAT AND ROCK"; break; case "F2-06": value = "BUOYANCY - SINKING BOAT"; break; case "F2-07": value = "BUOYANCY - PEPSI AND DIET PEPSI"; break; case "F2-08": value = "BUOYANCY - BATTLESHIP IN BATHTUB"; break; case "F2-09": value = "BUOYANCY - BALLOON IN HEAVY GAS"; break; case "F2-10": value = "BUOYANT BUBBLES"; break; case "F2-11": value = "HYDROMETER"; break; case "F2-12": value = "HOT AIR BALLOON"; break; case "F2-13": value = "BUOYANCY - EXPANDING BALLOON CONUNDRUM"; break; case "F2-21": value = "REACTION TO BUOYANT FORCE"; break; case "F2-22": value = "BUOYANCY PARADOX - ACCELERATED FRAME"; break; case "F2-23": value = "BUOYANCY PARADOX- INVERTED BLOCK"; break; case "F2-24": value = "ACCELERATED BUOYANT BALL"; break; case "F2-25": value = "BALANCE PARADOX - BUOYANCY WITH CROSSOVER"; break; case "F2-26": value = "BUOYANCY PARADOX - BALL IN TWO LIQUIDS"; break; case "F2-31": value = "BUOYANT BALLS IN BEANS"; break; case "F2-32": value = "FLOATING SQUARE BAR"; break; case "F2-41": value = "DENSITY - SLOPE OF MASS VS. VOLUME GRAPH"; break; case "F3-01": value = "SURFACE TENSION - JOLLY BALANCE"; break; case "F3-02": value = "SURFACE TENSION - BALLOONS"; break; case "F3-03": value = "SURFACE TENSION - SOAP BUBBLES"; break; case "F3-04": value = "SURFACE TENSION - THREAD ON WATER"; break; case "F3-05": value = "SURFACE TENSION - THREAD IN FRAME"; break; case "F3-06": value = "SURFACE TENSION - NEEDLE ON WATER"; break; case "F3-11": value = "SURFACE TENSION - CAPILLARY TUBES"; break; case "F3-21": value = "SURFACE TENSION - WATER AND ALCOHOL IN SAND"; break; case "F3-22": value = "SURFACE TENSION - AT THE 'BEACH'"; break; case "F3-31": value = "WATER BELL"; break; case "F4-01": value = "VISCOSITY OF LIQUIDS"; break; case "F4-02": value = "VISCOSITY OF AIR"; break; case "F4-03": value = "NON-NEWTONIAN FLUID"; break; case "F4-04": value = "SILLY PUTTY"; break; case "F4-05": value = "PARACHUTE TOY"; break; case "F4-11": value = "LAMINAR AND TURBULENT FLOW OF AIR"; break; case "F4-12": value = "UNMIXING - GLYCERINE AND DYE"; break; case "F4-13": value = "FLUID FLOW MODEL"; break; case "F4-14": value = "WIND TUNNEL"; break; case "F4-15": value = "FLYING BIRD MODEL"; break; case "F4-21": value = "LIQUID IN SPINNING SPHERE"; break; case "F4-22": value = "SPINNING WATER BUCKET"; break; case "F4-23": value = "WATER PENDULUM"; break; case "F4-24": value = "HILSCH VORTEX TUBE"; break; case "F4-25": value = "CYCLONE IN A BOTTLE"; break; case "F4-31": value = "SIPHON"; break; case "F4-32": value = "SIPHON - CHAIN MODEL"; break; case "F4-33": value = "PYTHAGOREAN CUP"; break; case "F4-34": value = "SIPHON BALANCE"; break; case "F4-41": value = "DRUM AND CANDLE"; break; case "F4-42": value = "SMOKE RINGS USING GARBAGE CAN"; break; case "F4-51": value = "VACUUM PUMP MODEL"; break; case "F4-52": value = "FORCE PUMP MODEL"; break; case "F4-53": value = "ARCHIMEDES' SCREW"; break; case "F4-61": value = "HERO'S FOUNTAIN"; break; case "F4-62": value = "HYDRAULIC RAM"; break; case "F4-63": value = "MARRIOTTE'S BOTTLE"; break; case "F5-01": value = "TOY CAR AND BALL - COANDA EFFECT"; break; case "F5-02": value = "BALL ABOVE MOVING CART - COANDA EFFECT"; break; case "F5-03": value = "THIN METAL SHEETS - COANDA EFFECT"; break; case "F5-04": value = "LARGE BALL AND FUNNEL - COANDA EFFECT"; break; case "F5-05": value = "SMALL BALL AND FUNNEL - COANDA EFFECT"; break; case "F5-06": value = "BEACH BALL - COANDA EFFECT"; break; case "F5-07": value = "SPOOL AND CARDBOARD"; break; case "F5-08": value = "MARBLE IN WATER JET"; break; case "F5-09": value = "HAIRDRYER AND PING PONG BALL - COANDA EFFECT"; break; case "F5-10": value = "CHIMNEY DRAW WITH WATER"; break; case "F5-11": value = "AIRPLANE WING"; break; case "F5-12": value = "BERNOULLI'S PRINCIPLE?"; break; case "F5-21": value = "VENTURI TUBE WITH MANOMETERS"; break; case "F5-22": value = "VENTURI TUBE WITH PING PONG BALLS"; break; case "F5-23": value = "VENTURI TUBE WITH WATER - GAUGES"; break; case "F5-24": value = "VENTURI TUBE WITH WATER - MANOMETERS"; break; case "F5-31": value = "MAGNUS EFFECT - FLETTNER'S SHIP"; break; case "F5-32": value = "CURVE BALL"; break; case "F5-40": value = "SOLAR BAG"; break; case "F5-41": value = "WINDBAG"; break; case "G1-01": value = "EXAMPLES OF SIMPLE HARMONIC MOTION"; break; case "G1-11": value = "COMPARISON OF SHM AND UCM"; break; case "G1-12": value = "PENDULUM AND ROTATING BALL"; break; case "G1-13": value = "MASS ON STRING"; break; case "G1-14": value = "PENDULA WITH DIFFERENT MASSES"; break; case "G1-15": value = "PENDULA WITH 4 TO 1 LENGTH RATIO"; break; case "G1-16": value = "PENDULUM WITH LARGE-ANGLE OSCILLATION"; break; case "G1-17": value = "PENDULUM WITH LARGE-ANGLE OSCILLATION - PORTABLE"; break; case "G1-18": value = "PENDULUM WITH FORCE SCALE"; break; case "G1-19": value = "CARTESIAN COORDINATES OF CIRCULAR MOTION"; break; case "G1-20": value = "PENDULUM RELEASE CONUNDRUM"; break; case "G1-31": value = "HOOKE'S LAW AND SHM"; break; case "G1-32": value = "MASS ON SPRING - WITH STAND"; break; case "G1-33": value = "MASSES AND SPRINGS WITH SPIDER"; break; case "G1-34": value = "AIR TRACK - SIMPLE HARMONIC MOTION"; break; case "G1-35": value = "MASS ON SPRING - EFFICIENT MODEL"; break; case "G1-36": value = "MASS ON SPRING WITH FORCE MEASUREMENT"; break; case "G1-37": value = "MASS ON SPRING WITH ULTRASONIC RANGER"; break; case "G1-41": value = "TORSIONAL PENDULUM - SMALL"; break; case "G1-42": value = "TORSIONAL PENDULUM - LARGE"; break; case "G1-43": value = "KLINGER TORSIONAL VIBRATION MACHINE"; break; case "G1-51": value = "INVERTED SPRING PENDULUM"; break; case "G1-52": value = "STRINGLESS PENDULUM"; break; case "G1-53": value = "SHM - CAN IN WATER TANK"; break; case "G1-54": value = "MASS'S DOUBLE PENDULUM"; break; case "G1-55": value = "INERTIA BALANCE"; break; case "G1-56": value = "INVERTED PENDULUM - SABER SAW"; break; case "G1-57": value = "INVERTED PENDULUM - SPEAKER-DRIVEN"; break; case "G1-58": value = "LOADED PENDULUM"; break; case "G1-59": value = "BIFILAR PENDULUM"; break; case "G1-60": value = "CHAOS - TWO BIFILAR PENDULA"; break; case "G1-71": value = "LISSAJOUS FIGURES - SAND PENDULUM"; break; case "G1-72": value = "LISSAJOUS FIGURES - X-Y RECORDER"; break; case "G1-73": value = "LISSAJOUS FIGURES - FOURIER SYNTHESIZER"; break; case "G1-74": value = "LISSAJOUS FIGURES - LASER AND LOUDSPEAKER"; break; case "G1-81": value = "OUIJA WINDMILL"; break; case "G1-82": value = "PENDULUM WAVES"; break; case "G1-83": value = "PENDULUM WAVES - COMM'L VERSION"; break; case "G2-01": value = "MASS ON SPRING - HAND HELD"; break; case "G2-02": value = "FORCED HARMONIC MOTION WITH DAMPING - LARGE"; break; case "G2-03": value = "RESONANCE IN TORSIONAL PENDULUM - PROJECTION"; break; case "G2-04": value = "DAMPED OSCILLATIONS"; break; case "G2-05": value = "AIR TRACK - DRIVEN AND DAMPED OSCILLATIONS"; break; case "G2-06": value = "FRAHM'S FREQUENCY METER"; break; case "G2-07": value = "PSYCHOACOUSTIC VIBRATION TRANSDUCER"; break; case "G2-08": value = "DRIVEN NON-LINEAR OSCILLATOR"; break; case "G2-09": value = "FORCED HARMONIC MOTION WITH SONAR"; break; case "G2-10": value = "STANDING WAVES KIT"; break; case "G2-11": value = "RESONANT SAW BLADES - HAND DRIVEN"; break; case "G2-12": value = "BARTON'S PENDULUMS"; break; case "G2-21": value = "COUPLED PENDULA"; break; case "G2-22": value = "BAR-COUPLED PENDULA"; break; case "G2-23": value = "SPRING-COUPLED PHYSICAL PENDULA"; break; case "G2-24": value = "COUPLED PENDULA - 100 TO 1 MASS RATIO"; break; case "G2-25": value = "COUPLED PENDULA - 1000:100:10:1 MASS RATIO"; break; case "G2-26": value = "COUPLED AIR TRACK GLIDERS"; break; case "G2-27": value = "COUPLED SERIES MASSES HANGING ON SPRINGS"; break; case "G2-28": value = "PENDULA WITH VARIABLE DRIVER"; break; case "G2-41": value = "WILBERFORCE PENDULUM"; break; case "G2-42": value = "ELASTIC PENDULUM"; break; case "G3-01": value = "SHIVE WAVE MACHINE - TRAVELING WAVES"; break; case "G3-02": value = "SHIVE WAVE MACHINE - SUPERPOSITION OF PULSES"; break; case "G3-03": value = "SHIVE WAVE MACHINE - REFLECTION OF PULSES"; break; case "G3-04": value = "SHIVE WAVE MACHINE - STANDING WAVES"; break; case "G3-05": value = "SHIVE WAVE MACHINE - PARTIAL REFLECTIONS"; break; case "G3-06": value = "SHIVE WAVE MACHINE - IMPEDANCE MATCHING"; break; case "G3-07": value = "SHIVE WAVE MACHINE - TAPERED TRANSFORMER"; break; case "G3-08": value = "SHIVE WAVE MACHINE - FABRY-PEROT INTERFEROMETER"; break; case "G3-09": value = "SHIVE WAVE MACHINE - FREQUENCY FILTERING"; break; case "G3-10": value = "SHIVE WAVE MACHINE - BRANCHING"; break; case "G3-11": value = "SHIVE WAVE MACHINE - RESONANCE ABSORPTION"; break; case "G3-20": value = "WAVE APPARATUS"; break; case "G3-21": value = "TRANSVERSE WAVES ON A LONG SPRING"; break; case "G3-22": value = "VELOCITY OF TRANSVERSE WAVE ALONG A BEAD CHAIN"; break; case "G3-23": value = "TRANSVERSE WAVES ON A LONG SPRING - FREE END"; break; case "G3-24": value = "SLINKY ON LECTURE TABLE - TRAVELING WAVES"; break; case "G3-25": value = "SLINKY ON LECTURE TABLE - IMPEDANCE MISMATCH"; break; case "G3-26": value = "AIR TRACK - LONGITUDINAL WAVES"; break; case "G3-27": value = "AIR TABLE - TRANSVERSE AND LONGITUDINAL WAVES"; break; case "G3-28": value = "SUSPENDED SLINKY"; break; case "G3-29": value = "SUSPENDED SLINKY - PORTABLE"; break; case "G3-41": value = "WAVE MODELS - PROJECTION"; break; case "G3-42": value = "TORSIONAL WAVES"; break; case "G3-43": value = "WHIP"; break; case "G3-44": value = "WAVE-DRIVEN BUMPER JACK"; break; case "G3-45": value = "RESONANCE OF WIRES"; break; case "G3-46": value = "STANDING WAVES IN A WIRE LOOP"; break; case "G3-51": value = "ROPE WAVE GENERATOR - FREQUENCY VS. WAVELENGTH"; break; case "G3-52": value = "ROPE WAVE GENERATOR - ROPE TENSION VS. WAVELENGTH"; break; case "G3-53": value = "STANDING WAVES IN A STRING"; break; case "G4-01": value = "RIPPLE TANK - PORTABLE"; break; case "G4-02": value = "RIPPLE TANK"; break; case "G4-03": value = "RIPPLE TANK - DOPPLER EFFECT"; break; case "G4-11": value = "SOAP FILM OSCILLATIONS"; break; case "G4-12": value = "STANDING WAVES ON A SOAP FILM"; break; case "G4-13": value = "DRUM HEAD - STANDING WAVES"; break; case "G4-14": value = "SPOUTING BOWL"; break; case "G4-21": value = "CHLADNI FIGURES - BOWED"; break; case "G4-22": value = "CHLADNI FIGURES - OSCILLATOR DRIVEN"; break; case "G4-31": value = "MOIRE PATTERNS"; break; case "G4-32": value = "MOIRE PATTERNS - COLOR"; break; case "G4-33": value = "GROUP VELOCITY - TRANSPARENCIES"; break; case "G4-41": value = "SOLITONS"; break; case "H1-01": value = "BELL IN VACUUM"; break; case "H1-02": value = "SPEAKER AND CANDLE"; break; case "H1-03": value = "BELLS"; break; case "H1-04": value = "BELL IN VACUUM - PORTABLE"; break; case "H1-11": value = "MICROPHONE AND OSCILLOSCOPE"; break; case "H1-12": value = "VISIBLE WAVEFORMS ON LARGE SPEAKER"; break; case "H1-13": value = "WAVEFORM GENERATOR, SPEAKER AND OSCILLOSCOPE"; break; case "H1-21": value = "SPEED OF SOUND - PHASE CHANGE"; break; case "H1-22": value = "SPEED OF SOUND - USING PULSES"; break; case "H1-23": value = "SPEED OF SOUND IN ALUMINUM"; break; case "H1-24": value = "SPEED OF SOUND IN HELIUM"; break; case "H1-25": value = "SPEED OF SOUND BETWEEN TWO MICROPHONES"; break; case "H1-26": value = "SPEED OF SOUND IN GARDEN HOSE"; break; case "H1-27": value = "SPEED OF SOUND - LISSAJOUS FIGURES"; break; case "H1-31": value = "SOUND LEVEL METER"; break; case "H1-32": value = "WAVETEK AND AUDIO CART - EQUAL SOUND LEVEL STEPS"; break; case "H1-41": value = "ULTRASONIC MOTION DETECTOR"; break; case "H1-42": value = "ULTRASONIC PEST CONTROLLER"; break; case "H1-43": value = "ULTRASONICS AND HEARING"; break; case "H1-44": value = "ULTRASONIC MOTION DETECTOR WAVE FORM"; break; case "H1-51": value = "AUDIOTAPE 42 MIN - SCIENCE OF SOUND - SHORT VERSION"; break; case "H1-52": value = "AUDIOTAPE 82 MIN - SCIENCE OF SOUND - LONG VERSION"; break; case "H1-53": value = "AUDIOTAPE 8 MIN - WOMB SOUNDS"; break; case "H2-01": value = "FOCUSING SOUND WITH CONCAVE REFLECTORS"; break; case "H2-02": value = "PARABOLIC MICROPHONE"; break; case "H2-03": value = "ACOUSTIC RADAR"; break; case "H2-11": value = "SOUND LENS"; break; case "H2-21": value = "AUDIBLE YOUNG'S EXPERIMENT - GROUP LISTENING"; break; case "H2-22": value = "INTERFERENCE - TRANSPARENCIES"; break; case "H2-23": value = "INTERFERENCE - KLINGER TRANSPARENT SLIDES"; break; case "H2-24": value = "AUDIBLE YOUNG'S EXPERIMENT - MIC AND SCOPE"; break; case "H2-25": value = "QUINCKE'S INTERFERENCE TUBES"; break; case "H2-26": value = "PHASE REVERSAL BETWEEN STEREO SPEAKERS"; break; case "H2-27": value = "PHASE REVERSAL BETWEEN STEREO SPEAKERS - OSCILLATOR "; break; case "H2-28": value = "FOURIER SYNTHESIZER - ADDITION OF WAVES"; break; case "H2-31": value = "ACOUSTIC COLLIMATOR"; break; case "H2-32": value = "SPEAKER WITH BAFFLE"; break; case "H2-33": value = "SPEAKER WITH EXPONENTIAL HORN"; break; case "H2-41": value = "DOPPLER BALL"; break; case "H2-42": value = "DOPPLER EFFECT - TUNING FORK ON STRING"; break; case "H2-51": value = "BEATS - AUDIO OSCILLATORS, SPEAKERS & OSCILLOSCOPE"; break; case "H2-52": value = "BEATS AND RESONANCE - TUNING BARS"; break; case "H2-53": value = "BEATS - AUDIO OSCILLATORS AND SPEAKERS"; break; case "H2-54": value = "BEATS - MOIRE PATTERN "; break; case "H2-55": value = "BEATS AND RESONANCE - TUNING BOXES"; break; case "H3-01": value = "STANDING SOUND WAVES - TWO SOURCES"; break; case "H3-02": value = "STANDING SOUND WAVES - REFLECTION"; break; case "H3-03": value = "REFLECTION OF PULSES IN TUBE"; break; case "H3-04": value = "KUNDT'S TUBE - STROKED ROD"; break; case "H3-05": value = "KUNDT'S TUBE - OSCILLATOR DRIVEN"; break; case "H3-11": value = "TUNING FORKS AND RESONANT TUBE"; break; case "H3-12": value = "ROARING TUBE - 4 FT"; break; case "H3-13": value = "ROARING TUBE - 8 FT"; break; case "H3-14": value = "TWIRL-A-TUNE"; break; case "H3-15": value = "TWIRL-A-TUNE AND VACUUM CLEANER"; break; case "H3-16": value = "SINGING PIPES"; break; case "H3-17": value = "FLAME TUBE"; break; case "H3-19": value = "FLEX-A-TONE"; break; case "H3-20": value = "ZUBE TUBE"; break; case "H3-21": value = "SOUND RESONANCE IN WATER TUBE"; break; case "H3-22": value = "RESONANCE TUBE - OSCILLATOR AND PLUNGER"; break; case "H3-23": value = "RESONANCE TUBE - OSCILLATOR, PLUNGER & MICROPHONE"; break; case "H3-24": value = "OPEN AND CLOSED PIPES"; break; case "H3-25": value = "GALTON'S WHISTLE"; break; case "H3-31": value = "DUCK CALL"; break; case "H3-32": value = "RESONANCE IN TUBE - POURING WATER"; break; case "H3-33": value = "RESONANCE FROM WHITE NOISE IN VARIABLE TUBE"; break; case "H3-41": value = "RESONANCE CURVES - HELMHOLTZ RESONATOR"; break; case "H3-42": value = "RESONANCE CURVES - OPEN AND CLOSED TUBES"; break; case "H3-43": value = "RESONANCE CURVES WITH STORAGE SCOPE"; break; case "H3-51": value = "SONOMETER WITH TUNING PEGS"; break; case "H3-52": value = "SONOMETER WITH WEIGHTS"; break; case "H3-61": value = "BEAKER BREAKER"; break; case "H3-62": value = "TEACUP STANDING WAVES"; break; case "H3-71": value = "STROKED ALUMINUM ROD"; break; case "H3-72": value = "TUNING RODS"; break; case "H3-73": value = "TUNING RODS - SUSPENDED"; break; case "H3-74": value = "TUNING BAR PARADOX - EFFECT OF WIDTH"; break; case "H3-75": value = "TUNING BAR MYSTERY"; break; case "H4-01": value = "FOURIER SYNTHESIS"; break; case "H4-02": value = "FOURIER ANALYSIS - WAVE SHAPE AND SPECTRUM"; break; case "H4-04": value = "FOURIER ANALYSIS - DIGITAL OSCILLOSCOPE"; break; case "H4-11": value = "SAVART'S DISCS"; break; case "H4-12": value = "LISSAJOUS FREQUENCY MEASUREMENT"; break; case "H4-13": value = "PLAYING IN JUST INTONATION"; break; case "H4-14": value = "LISSAJOUS FIGURES - VOICE"; break; case "H4-15": value = "TUNER - STROBE TYPE"; break; case "H4-16": value = "TUNER - KORG"; break; case "H4-17": value = "AUDIOTAPE 16 MIN - MUSICAL TEMPERAMENT"; break; case "H4-18": value = "LISSAJOUS FIGURES WITH SOUND"; break; case "H4-21": value = "EDGE TONES"; break; case "H4-22": value = "BOTTLE BAND"; break; case "H4-23": value = "SOUND BOARD - TUNING FORK AND LECTURE TABLE"; break; case "H4-31": value = "VIOLIN"; break; case "H4-32": value = "VIBRAPHONE"; break; case "H4-33": value = "ORGAN PIPE"; break; case "H4-34": value = "GUITAR AND OSCILLOSCOPE"; break; case "H4-35": value = "MELLOPHONE"; break; case "H4-36": value = "LIP-BLOWN TUBE"; break; case "H4-37": value = "FLEXIBLE TRUMPET"; break; case "H4-38": value = "CORNET"; break; case "H4-39": value = "PLASTIC TUBE FLUTE"; break; case "H4-40": value = "PLASTIC TUBE CLARINET"; break; case "H4-41": value = "DRUM"; break; case "H4-42": value = "RECORDER"; break; case "H4-51": value = "MODULATION - AM AND FM"; break; case "H4-52": value = "SPECTRUM ANALYSIS OF MODULATION"; break; case "H4-53": value = "MOOG ROGUE SYNTHESIZER"; break; case "H4-54": value = "ARP 2600 ANALOG SYNTHESIZER"; break; case "H4-55": value = "YAMAHA DX7 DIGITAL SYNTHESIZER"; break; case "H4-56": value = "SYNTHESIZER INTRODUCTION - VOLTAGE CONTROL OF FREQUENCY"; break; case "H4-57": value = "FREQUENCY MODULATION BY FEEDBACK"; break; case "H4-58": value = "MODULATION - AM RADIO"; break; case "H4-61": value = "HARMONIC DISTORTION OF TAPE RECORDER"; break; case "H4-64": value = "DISTORTION IN AUDIO AMPLIFIER"; break; case "H4-65": value = "CROSSOVER NETWORK FOR SPEAKERS"; break; case "H4-66": value = "CROSSOVER NETWORK - LARGE ADVENT"; break; case "H4-67": value = "CD WITH HOLE"; break; case "H4-68": value = "MP3 COMPRESSION"; break; case "H4-71": value = "AUDIOTAPE 20 MIN - ACOUSTICS FOR THE MUSIC EDUCATOR"; break; case "H4-81": value = "AUDIO CART - COMPLETE AUDIO SYSTEM"; break; case "H4-91": value = "COMPACT DISC - MULTIMEDIA SOUND"; break; case "H4-92": value = "DIGITAL DOMAIN DEMONSTRATION CD"; break; case "H4-93": value = "COMPACT DISC - SWITCHED-ON BACH"; break; case "H4-94": value = "AUDIOTAPE - VOICE OF THE COMPUTER"; break; case "H4-95": value = "AUDIOTAPE - NONESUCH GUIDE TO ELECTRONIC MUSIC"; break; case "H4-96": value = "ELECTRONIC MUSIC WITH SPECTROGRAM"; break; case "H4-97": value = "COMPACT DISC - CLOCKWORK ORANGE"; break; case "H5-01": value = "EAR MODEL"; break; case "H5-02": value = "ANATOMY OF THE EAR - SLIDES AND ATLAS"; break; case "H5-03": value = "STETHOSCOPE"; break; case "H5-11": value = "WAVETEK AND AUDIO CART - FREQUENCY RANGE OF HEARING"; break; case "H5-12": value = "WAVETEKS AND AUDIO CART - CRITICAL BAND"; break; case "H5-13": value = "WAVETEKS AND AUDIO CART - MASKING"; break; case "H5-14": value = "ARP SYNTHESIZER - MASKING BY NARROW-BAND NOISE"; break; case "H5-15": value = "EFFECT OF HARMONIC CONTENT ON TONE QUALITY"; break; case "H5-16": value = "OHM'S LAW OF HEARING - FOURIER SYNTHESIZER"; break; case "H5-17": value = "WAVETEKS AND AUDIO CART - QUALITY BEATS"; break; case "H5-18": value = "DIFFERENCE FREQUENCIES - AUDIO CART"; break; case "H5-19": value = "SUM AND DIFFERENCE TONES"; break; case "H5-20": value = "HEARING SCIENCE LABORATORY "; break; case "H5-21": value = "THREE DECIBELS "; break; case "H5-31": value = "DIPLACUSIS AND BINARY BEATS"; break; case "H5-41": value = "COMPACT DISC - AUDITORY DEMONSTRATIONS"; break; case "H5-42": value = "AUDIOTAPE 24 MIN - GETTING THROUGH"; break; case "H5-43": value = "AUDIOTAPE 6 MIN - SHEPARD'S TONES"; break; case "H5-44": value = "AUDIOTAPE 55 MIN - AUDIO DEMONSTRATIONS"; break; case "H5-45": value = "AUDIOTAPE 32 MIN - AUDITORY ILLUSIONS AND "; break; case "H5-46": value = "COMPACT DISC - MUSICAL ILLUSIONS AND "; break; case "H5-47": value = "COMAPCT DISC - PHANTOM WORDS AND OTHER CURIOSITIES"; break; case "H5-48": value = "COMPACT DISC - SHEPARD'S TONES"; break; case "H6-49": value = "McGURK EFFECT"; break; case "H6-01": value = "FOURIER ANALYSIS OF VOICE"; break; case "H6-02": value = "VOCAL FORMANTS"; break; case "H6-03": value = "VOCAL FORMANTS MODEL"; break; case "H6-04": value = "HELIUM VOICE"; break; case "H6-05": value = "SULFUR HEXAFLUORIDE VOICE"; break; case "H6-06": value = "SYNTHESIZER - WOW"; break; case "H6-07": value = "AUDIO SPECTROGRAMS AND SPECTRAL SURFACES"; break; case "H6-08": value = "SOUND SPECTROGRAMS"; break; case "H6-11": value = "AUDIOTAPE 60 MIN - MUSIC OF TIBET"; break; case "H6-12": value = "AUDIOTAPE 60 MIN - THE HARMONIC CHOIR"; break; case "H6-13": value = "COMPACT DISC - HUUN-HUUR-TU"; break; case "H6-14": value = "AUDIOTAPE 5 MIN - SYNTHETIC SPEECH"; break; case "H6-15": value = "AUDIOTAPE: MIN - VOCAL FORMANTS"; break; case "H6-16": value = "COMPACT DISC - COALESCENCE"; break; case "H6-21": value = "BIRD CALLS - AUDIOTAPE, SLIDES AND SPECTROGRAMS"; break; case "H6-22": value = "AUDIOTAPE 10 MIN - BIRD SONGS"; break; case "I1-01": value = "THERMOMETERS"; break; case "I1-11": value = "THERMAL EXPANSION - BALL AND HOLE"; break; case "I1-12": value = "THERMAL EXPANSION - BALL AND RING"; break; case "I1-13": value = "THERMAL EXPANSION - BIMETAL STRIP"; break; case "I1-14": value = "THERMAL EXPANSION OF ALUMINUM - OPTICAL LEVER"; break; case "I1-15": value = "THERMAL EXPANSION - PIN BREAKER"; break; case "I1-16": value = "THERMAL CONTRACTION OF CUPS WITH LN"; break; case "I1-17": value = "THERMOSTAT - MODEL"; break; case "I1-18": value = "BIMETALLIC STRIP THERMOMETERS"; break; case "I1-19": value = "LAVA LAMP"; break; case "I1-21": value = "WATER NEAR 4 DEGREES CELCIUS"; break; case "I1-22": value = "WATER DENSITY VS TEMPERATURE"; break; case "I1-31": value = "RUBBER BAND ENGINE"; break; case "I1-32": value = "RUBBER BAND CONTRACTION DURING HEATING"; break; case "I1-41": value = "THERMOELECTRIC MAGNET"; break; case "I1-42": value = "THERMOELECTRIC FAN"; break; case "I1-43": value = "THERMOCOUPLE"; break; case "I1-51": value = "RUBBER AT LN TEMPERATURE"; break; case "I1-52": value = "TUNING FORK AT LN TEMPERATURE"; break; case "I1-53": value = "LEAD BELL AT LN TEMPERATURE"; break; case "I1-61": value = "DUST EXPLOSION"; break; case "I1-62": value = "DUST EXPLOSION MODEL"; break; case "I1-63": value = "HYDROGEN EXPLOSION"; break; case "I1-64": value = "BURNING CANDLE - COMBUSTION PROCESS"; break; case "I1-71": value = "SHAPE-MEMORY ALLOY - THERMOBILE"; break; case "I1-72": value = "SHAPE-MEMORY ALLOY - ICEMOBILE"; break; case "I1-73": value = "SHAPE-MEMORY ALLOY - COOL CRAFT"; break; case "I1-74": value = "SHAPE-MEMORY ALLOY - CLOVER"; break; case "I2-01": value = "CROOKES' RADIOMETER"; break; case "I2-02": value = "CROOKES' RADIOMETER - DOUBLE"; break; case "I2-03": value = "CROOKES' RADIOMETER - ROTATION REVERSAL"; break; case "I2-04": value = "WIEN'S LAW OF THERMAL RADIATION"; break; case "I2-05": value = "LESLIE'S CUBE"; break; case "I2-06": value = "THERMOPILE WITH AUDIO OSCILLATOR"; break; case "I2-07": value = "THERMOPILE WITH DVM"; break; case "I2-08": value = "RADIATIVE HEAT TRANSFER"; break; case "I2-09": value = "DEWAR - TRANSPARENT WITH LN"; break; case "I2-10": value = "DEWARS - SILVERED AND UNSILVERED"; break; case "I2-11": value = "THERMOS BOTTLE"; break; case "I2-12": value = "RADIATION FROM COLD OBJECT"; break; case "I2-21": value = "THERMAL CONDUCTIVITY IN METALS"; break; case "I2-22": value = "THERMODYNAMICS BY TOUCH"; break; case "I2-23": value = "THERMAL CONDUCTIVITY IN METALS - PROJECTION"; break; case "I2-24": value = "THERMAL CONDUCTIVITY IN WATER"; break; case "I2-25": value = "THERMAL CONDUCTIVITY IN BUILDING MATERIALS"; break; case "I2-26": value = "LEIDENFROST PHENOMENON"; break; case "I2-27": value = "THERMAL EQUILIBRIUM BETWEEN ALUMINUM AND COPPER"; break; case "I2-28": value = "REVERSIBLE THERMOELECTRIC DEMONSTRATOR"; break; case "I2-41": value = "CONVECTION - POWDER IN WATER"; break; case "I2-42": value = "FALLING CANDLE"; break; case "I2-43": value = "CONVECTION - HOT PLATE"; break; case "I2-44": value = "CONVECTION - CANDLE IN CYLINDER"; break; case "I2-45": value = "CONVECTION - HIGH/LOW CANDLES IN CYLINDER"; break; case "I3-01": value = "BAROMETER - ANEROID TYPE"; break; case "I3-02": value = "BAROMETER - WEIGHT PARADOX"; break; case "I3-03": value = "GALILEO'S THERMOSCOPE"; break; case "I3-04": value = "GALILEAN THERMOMETER"; break; case "I3-11": value = "WATER BAROMETER - BOTTLE COLLAPSE"; break; case "I3-12": value = "WATER BAROMETER - CAN CRUSHER"; break; case "I3-13": value = "INVERTED GLASS OF WATER"; break; case "I3-14": value = "MAGDEBURG HEMISPHERES"; break; case "I3-15": value = "MAGDEBURG HEMISPHERES - PORTABLE"; break; case "I3-16": value = "COLLAPSE OF CAN - LARGE PUMP"; break; case "I3-17": value = "COLLAPSE OF CAN - PORTABLE PUMP"; break; case "I3-18": value = "VACUUM BAZOOKA"; break; case "I3-19": value = "LIFTING USING ATMOSPHERIC PRESSURE"; break; case "I3-20": value = "COLLAPSE OF CAN - LARGE CAN WITH MALLET"; break; case "I3-31": value = "IDEAL GAS LAW - VOLUME OF ONE MOLE"; break; case "I3-32": value = "ISOBARIC EXPANSION OF AIR"; break; case "I3-33": value = "HELIUM BALLOON ON LIQUID NITROGEN"; break; case "I3-41": value = "BOYLE'S LAW - PROJECTION"; break; case "I3-42": value = "BOYLED MARSHMALLOWS"; break; case "I3-43": value = "TIRE PRESSURE - UNLOADED AND LOADED"; break; case "I3-51": value = "CHARLES' LAW - PROJECTION"; break; case "I3-52": value = "CONSTANT VOLUME GAS THERMOMETER - ABSOLUTE "; break; case "I4-01": value = "PVT PHASE DIAGRAMS FOR CO2 AND H2O"; break; case "I4-02": value = "PVT SURFACE - TRANSPARENT"; break; case "I4-03": value = "LATENT HEAT - ICE TO WATER TO STEAM"; break; case "I4-11": value = "BOILING AT REDUCED PRESSURE"; break; case "I4-12": value = "BOILING WATER BY PUMPING"; break; case "I4-13": value = "CHANGE OF STATE OF LN - POPPING CAN LID"; break; case "I4-14": value = "CHANGE OF STATE WITH BANG"; break; case "I4-15": value = "CONDENSATION OF STEAM - GALLON CAN COLLAPSE"; break; case "I4-16": value = "DRINKING BIRD"; break; case "I4-17": value = "AIR BALLOON ON LIQUID NITROGEN"; break; case "I4-18": value = "PULSE GLASS"; break; case "I4-19": value = "CONDENSATION OF STEAM - SODA CAN COLLAPSE"; break; case "I4-31": value = "ICE BOMB"; break; case "I4-32": value = "FREEZING WATER BY PUMPING"; break; case "I4-33": value = "CRYOPHORUS"; break; case "I4-34": value = "HAND WARMER"; break; case "I4-35": value = "LOWERING THE FREEZING POINT OF WATER USING SALT"; break; case "I4-36": value = "REGELATION - ICE UNDER PRESSURE"; break; case "I4-51": value = "SUBLIMATION OF DRY ICE - PROJECTION"; break; case "I4-52": value = "CARBON DIOXIDE BALLOON ON LIQUID NITROGEN"; break; case "I4-61": value = "BINARY PHASE TRANSITION - CRITICAL "; break; case "I5-01": value = "MECHANICAL EQUIVALENT OF HEAT - SHOT BAG"; break; case "I5-02": value = "TRANSFORMATION OF MECHANICAL ENERGY INTO HEAT"; break; case "I5-03": value = "MECHANICAL EQUIVALENT OF HEAT - JOULE'S METHOD"; break; case "I5-11": value = "ADIABATIC PROCESS - AIR PISTON WITH THERMISTOR"; break; case "I5-12": value = "ADIABATIC EXPANSION OF AIR - FOG IN BOTTLE"; break; case "I5-13": value = "ADIABATIC EXPANSION OF AIR - GRAPH OF TEMP"; break; case "I5-14": value = "LIQUEFICATION OF NITROGEN"; break; case "I5-15": value = "ADIABATIC EXPANSION OF CARBON DIOXIDE"; break; case "I5-21": value = "HEATING AIR BY COMPRESSION"; break; case "I5-22": value = "FIRE SYRINGE"; break; case "I5-31": value = "STEAM ENGINE - STATIONARY"; break; case "I5-32": value = "STIRLING ENGINE"; break; case "I5-33": value = "STEAM ROLLER"; break; case "I5-34": value = "STIRLING ENGINE - VISIBLE"; break; case "I5-41": value = "ENDOTHERMIC REACTION - ENTROPY"; break; case "I5-51": value = "SPECIFIC HEAT - ALUMINUM AND COPPER"; break; case "I5-52": value = "ELECTRIC CALORIMETER"; break; case "I6-01": value = "GAS PRESSURE - MODEL"; break; case "I6-02": value = "NITROGEN DIAMETER AND MEAN FREE PATH"; break; case "I6-03": value = "EQUIPARTITION OF ENERGY"; break; case "I6-11": value = "BROWNIAN MOTION WITH TV"; break; case "I6-12": value = "BROWNIAN MOTION - SMALL VERSION"; break; case "I6-13": value = "AIR TABLE - MODEL OF BROWNIAN MOTION"; break; case "I6-21": value = "GAS DIFFUSION - MODEL"; break; case "I6-22": value = "IODINE DIFFUSION TUBES"; break; case "I6-23": value = "DIFFUSION - FOOD COLOR IN WATER"; break; case "I6-24": value = "DIFFUSION VELOCITY"; break; case "I6-25": value = "DIFFUSION - DISTRIBUTION OF PING-PONG BALLS"; break; case "I6-26": value = "DIFFUSION - PERFUME"; break; case "I6-31": value = "MOLECULAR MOTION DEMO - BROWNIAN MOTION"; break; case "I6-32": value = "MOLECULAR MOTION DEMO - RANDOM MOTION IN GASES"; break; case "I6-33": value = "MOLECULAR MOTION DEMO - GAS PRESSURE"; break; case "I6-34": value = "MOLECULAR MOTION DEMO - TEMPERATURE OF A GAS"; break; case "I6-35": value = "MOLECULAR MOTION DEMO - DIFFUSION"; break; case "I6-36": value = "MOLECULAR MOTION DEMO - AVOGADRO'S HYPOTHESIS"; break; case "I6-37": value = "MOLECULAR MOTION DEMO - VAN DER WAALS FORCES"; break; case "I6-38": value = "MOLECULAR MOTION DEMO - BOYLE'S LAW"; break; case "I6-39": value = "MOLECULAR MOTION DEMO - CHARLES' LAW"; break; case "I6-40": value = "MOLECULAR MOTION DEMO - SOLIDS"; break; case "I6-41": value = "MOLECULAR MOTION DEMO - LIQUIDS"; break; case "I6-51": value = "ENTROPY - SORTING MARBLES"; break; case "I6-52": value = "ENTROPY - FOUR BALLS IN GAS DIFFUSION MODEL"; break; case "I6-61": value = "MAXWELL DEMON"; break; case "I7-01": value = "CRYSTAL MODELS - SET OF 2"; break; case "I7-02": value = "CRYSTAL MODELS - BRAVAIS SET OF 14"; break; case "I7-03": value = "CRYSTAL MODELS - BRAVAIS SUPPL SET OF 18"; break; case "I7-04": value = "CRYSTAL MODELS - CALCITE"; break; case "I7-05": value = "CRYSTAL MODELS - LARGE"; break; case "I7-06": value = "CRYSTAL MODELS - LARGE UNIVERSAL"; break; case "I7-07": value = "CLOSE-PACKED CRYSTALLITE"; break; case "I7-08": value = "CRYSTAL MODEL WITH FAULTS"; break; case "I7-11": value = "FERMI SURFACE OF ALUMINUM"; break; case "I7-21": value = "SUPERCONDUCTIVITY - MAGNET LEVITATION"; break; case "I7-31": value = "FILLED CONDUCTION BANDS"; break; case "J1-01": value = "TRIBOELECTRICITY - CHARGING BY FRICTION"; break; case "J1-02": value = "TRIBOELECTRICITY - WATER JET IN AIR"; break; case "J1-03": value = "KILOVOLT CARPET"; break; case "J1-04": value = "KILOVOLT INSTRUCTOR"; break; case "J1-05": value = "CHARGED BALLOONS"; break; case "J1-06": value = "FUN-FLY-STICK"; break; case "J1-11": value = "ELECTROPHORUS"; break; case "J1-12": value = "INDUCTION - ELECTROSCOPE"; break; case "J1-13": value = "ELECTROSTATIC INDUCTION"; break; case "J1-21": value = "ELECTROSTATIC ATTRAC AND REPULS - CHARGED CYLINDERS"; break; case "J1-22": value = "ELECTROSTATIC ATTRAC AND REPULS - WIMSHURST MACHINE"; break; case "J1-23": value = "ELECTRIC CHIMES"; break; case "J1-24": value = "ELECTROSTATIC HAIR RAISING"; break; case "J1-25": value = "VAN DE GRAAFF - TRAINED RABBIT"; break; case "J1-26": value = "VAN DE GRAAFF - REPULSION OF PIE PANS"; break; case "J1-27": value = "QUALITATIVE EXISTENCE OF ELECTROSTATIC FORCES"; break; case "J1-28": value = "COULOMBS LAW - PROJECTION"; break; case "J1-29": value = "VAN DE GRAAFF - PENDULUM"; break; case "J1-41": value = "CONDUCTORS AND INSULATORS"; break; case "J2-01": value = "WIMSHURST MACHINE"; break; case "J2-02": value = "KELVIN ELECTROSTATIC GENERATOR"; break; case "J2-03": value = "VAN DE GRAAFF GENERATOR WITH GROUND SPHERE"; break; case "J2-11": value = "FRANKLIN'S WHEEL"; break; case "J2-12": value = "FRANKLIN'S WHEEL - AC"; break; case "J2-13": value = "PLASMA MACHINE - EYE OF THE STORM"; break; case "J2-14": value = "LIGHTNING ROD SIMULATOR"; break; case "J2-15": value = "ELECTROSTATIC SMOKE PRECIPITATOR"; break; case "J2-16": value = "ELECTRODELESS GAS DISCHARGE"; break; case "J2-17": value = "ELECTRIC WIND"; break; case "J2-31": value = "JACOB'S LADDER"; break; case "J2-32": value = "JACOB'S LADDER - PORTABLE"; break; case "J2-33": value = "TESLA COIL - PORTABLE"; break; case "J2-51": value = "ELECTROSTATIC MOTOR"; break; case "J2-61": value = "MOVING CHARGES - FILM REWINDER"; break; case "J3-01": value = "EXISTENCE OF ELECTRIC FIELDS"; break; case "J3-02": value = "ELECTRIC FIELD OF RING OF CHARGE - MODEL"; break; case "J3-03": value = "ELECTRIC FIELD LINES"; break; case "J3-04": value = "ELECTRIC FIELD LINES - SOAP BUBBLES"; break; case "J3-05": value = "VAN DE GRAAFF - INDUCTION WITH SPHERES AND NEON BULBS"; break; case "J3-06": value = "ELLIPSOIDAL CONDUCTOR"; break; case "J3-07": value = "VAN DE GRAAFF - DISCHARGE TO VARIOUS RADII"; break; case "J3-08": value = "VAN DE GRAAFFS - INTERACTING FIELDS"; break; case "J3-11": value = "EQUIPOTENTIALS/LINES OF FORCE - ONE CHARGE"; break; case "J3-12": value = "EQUIPOTENTIALS/LINES OF FORCE - TWO POSITIVE CHARGES"; break; case "J3-13": value = "POTENTIAL SURFACE MODEL WITH E FIELD VECTORS"; break; case "J3-14": value = "FLUX MODEL - ELECTROSTATICS"; break; case "J3-21": value = "FARADAY CAGE"; break; case "J3-22": value = "FARADAY CAGE - ELECTROSCOPE"; break; case "J3-23": value = "FARADAY CAGE - RADIOWAVES"; break; case "J3-24": value = "HOLLOW CONDUCTING SPHERE"; break; case "J4-01": value = "PARALLEL PLATE CAPACITOR"; break; case "J4-02": value = "PARALLEL PLATE CAPACITOR - SYMMETRIC"; break; case "J4-03": value = "PARALLEL PLATE CAPACITOR - SERIES CAPACITORS"; break; case "J4-04": value = "PARALLEL PLATE CAPACITOR - IONIZATION OF AIR"; break; case "J4-11": value = "POLAR AND NONPOLAR LIQUIDS"; break; case "J4-12": value = "ELECTROSTATIC FORCE - MOVING LUMBER"; break; case "J4-13": value = "MATCHSTICK ON NICKLE UNDER GLASS"; break; case "J4-21": value = "COLOR FILTER MODEL OF CHARGED DIELECTRIC"; break; case "J4-22": value = "PARALLEL PLATE CAPACITOR WITH DIELECTRIC"; break; case "J4-23": value = "POLARIZATION OF DIELECTRIC - DISSECTIBLE LEYDEN JAR"; break; case "J4-24": value = "FORCE ON DIELECTRIC IN ELECTRIC FIELD"; break; case "J4-31": value = "ENERGY STORED IN A CAPACITOR"; break; case "J4-32": value = "DISCHARGE OF CAPACITOR WITH BANG"; break; case "J4-41": value = "CAPACITORS"; break; case "J4-42": value = "CAPACITORS IN SERIES AND PARALLEL"; break; case "J4-43": value = "CAPACITORS IN SERIES AND PARALLEL WITH PROJECTION METER"; break; case "J4-51": value = "THEREMIN"; break; case "J5-01": value = "MAGNETIC FIELD OF A BAR MAGNET"; break; case "J5-02": value = "MAGNETIC FIELD - EME SET - BAR MAGNET"; break; case "J5-03": value = "MAGNETIC FIELD OF A BAR MAGNET - 3D VERSION"; break; case "J5-04": value = "MAGNETS"; break; case "J5-05": value = "MAGNET MODEL - FIELD LINES"; break; case "J5-06": value = "MAGNET - BROKEN BUT NO MONOPOLE"; break; case "J5-07": value = "MAGNETIZED WIRE FIELD LINE INDICATOR"; break; case "J5-11": value = "MAGNETIC FIELD - EME SET - STRAIGHT WIRE"; break; case "J5-12": value = "MAGNETIC FIELD - EME SET - TWO-TURN HELIX"; break; case "J5-13": value = "MAGNETIC FIELD - EME SET - SOLENOIDS"; break; case "J5-14": value = "MAGNETIC FIELD AROUND SINGLE AND PARALLEL WIRES"; break; case "J5-15": value = "MAGNETIC FIELD OF RING OF CURRENT - MODEL"; break; case "J5-16": value = "MAGNETIC FIELD OF WIRE, LOOP, SOLENOID"; break; case "J5-17": value = "HELMHOLTZ COILS AND HALL PROBE"; break; case "J5-18": value = "OERSTED EXPERIMENT"; break; case "J5-19": value = "MAGNET FIELDS OF PARALLEL AND "; break; case "J5-20": value = "OERSTED EXPERIMENT - LARGE COIL AND COMPASS"; break; case "J5-30": value = "OMEGA LEVITRON"; break; case "J5-31": value = "QUADRUPOLE MAGNETIC "; break; case "J5-32": value = "MAGNETIC LEVITATION - PERMANENT MAGNET AND "; break; case "J5-33": value = "TORQUE ON A BAR MAGNET"; break; case "J5-34": value = "DECLINATION AND INCLINATION NEEDLE"; break; case "J5-35": value = "MAGNETS INTERACTING ON PIVOTS"; break; case "J5-36": value = "MAGNETIC SPINNER"; break; case "J5-41": value = "FLUX MODEL - MAGNETOSTATIC"; break; case "J5-51": value = "GAUSSMETER"; break; case "J6-01": value = "ELECTROMAGNET WITH BANG"; break; case "J6-02": value = "ELECTROMAGNET WITH JUNK"; break; case "J6-03": value = "ELECTROMAGNET WITH JUNK - WITHOUT CORE"; break; case "J6-04": value = "LOW POWER - HIGH FORCE ELECTROMAGNET"; break; case "J6-21": value = "MAGNETIC FIELD IN GAP OF ELECTROMAGNET"; break; case "J6-31": value = "FORCE ON SOLENOID CORE"; break; case "J6-32": value = "FORCE ON SOLENOID CORE - SMALL"; break; case "J6-33": value = "ELECTROMAGNETIC GUN"; break; case "J7-01": value = "LODESTONE"; break; case "J7-11": value = "PARAMAGNETISM AND DIAMAGNETISM"; break; case "J7-12": value = "CURIE POINT OF IRON"; break; case "J7-13": value = "CURIE POINT OF NICKEL"; break; case "J7-14": value = "CURIE POINT OF DYSPROSIUM"; break; case "J7-21": value = "HYSTERESIS"; break; case "J7-22": value = "MAGNETIC DOMAINS WITH TV"; break; case "J7-23": value = "MAGNETIC DOMAINS - MODEL"; break; case "J7-24": value = "BARKHAUSEN EFFECT"; break; case "J7-31": value = "VISIBLE HARD DRIVE"; break; case "K1-01": value = "FORCE BETWEEN CURRENT-CARRYING WIRES"; break; case "K1-02": value = "FORCE BETWEEN CURRENT-CARRYING WIRES - PROJECTION"; break; case "K1-03": value = "FORCE ON CURRENT IN MAGNETIC FIELD"; break; case "K1-04": value = "FORCE ON CURRENT IN MAGNETIC FIELD - PORTABLE"; break; case "K1-05": value = "FORCE BETWEEN CURRENT-CARRYING COILS"; break; case "K1-06": value = "CURRENT BALANCE"; break; case "K1-11": value = "CATHODE-RAY TUBE - DEFLECTION BY CURRENT"; break; case "K1-12": value = "CATHODE-RAY TUBE - DEFLECTION BY MAGNET"; break; case "K1-13": value = "CATHODE-RAY TUBE - DE LA RIVE MAGNETIC EFFECT"; break; case "K1-14": value = "OSCILLOSCOPE CRT - DEFLECTION BY MAGNET"; break; case "K1-15": value = "OSCILLOSCOPE CRT - DEFLECTION BY ELECTRIC FIELD"; break; case "K1-16": value = "VISIBLE CRT"; break; case "K1-21": value = "TORQUE ON CURRENT LOOP IN MAGNETIC FIELD"; break; case "K1-22": value = "TORQUE ON 500-TURN COIL IN MAGNETIC FIELD"; break; case "K1-23": value = "TORQUE ON CURRENT LOOP - MODEL"; break; case "K1-31": value = "MAGNETOHYDRODYNAMIC GENERATOR"; break; case "K1-41": value = "BARLOW'S DISC"; break; case "K1-51": value = "HALL EFFECT"; break; case "K2-01": value = "EARTH INDUCTOR"; break; case "K2-02": value = "INDUCTION IN A SINGLE WIRE"; break; case "K2-03": value = "FARADAY'S EXPERIMENT ON INDUCTION"; break; case "K2-04": value = "FARADAY'S EXPERIMENT - EME SET - 20, 40, 80 TURN COILS"; break; case "K2-05": value = "FARADAY'S EXPERIMENT - CONCENTRIC COILS"; break; case "K2-11": value = "SELF INDUCTION"; break; case "K2-12": value = "SELF-INDUCTION - DEMOUNTABLE TRANSFORMER"; break; case "K2-21": value = "RUHMKORFF INDUCTION COIL"; break; case "K2-22": value = "INDUCTION COIL WITH LIGHT BULB"; break; case "K2-23": value = "INDUCTOR - ARCING SWITCH"; break; case "K2-24": value = "MUTUAL INDUCTION"; break; case "K2-25": value = "MUTUAL INDUCTION - DEMOUNTABLE TRANSFORMER"; break; case "K2-26": value = "MUTUAL INDUCTION STANDARD"; break; case "K2-27": value = "MUTUAL INDUCTION - M12 eq M21 MEASUREMENT"; break; case "K2-28": value = "DEMOUNTABLE TRANSFORMER - 10KV ARC"; break; case "K2-29": value = "COIL AND MAGNET WITH LED SENSOR"; break; case "K2-40": value = "MAGNETIC ACCELERATOR"; break; case "K2-41": value = "LENZ'S LAW - ROLLING RODS"; break; case "K2-42": value = "LENZ'S LAW - MAGNET IN ALUMINUM TUBE"; break; case "K2-43": value = "LENZ'S LAW - PERMANENT MAGNET AND COILS"; break; case "K2-44": value = "EDDY CURRENT PENDULUM"; break; case "K2-45": value = "EDDY CURRENTS - MAGNET AND SOFT DRINK CAN"; break; case "K2-46": value = "MAGNET LEVITATION ABOVE SPINNING DISC"; break; case "K2-47": value = "SPEEDOMETER MODEL"; break; case "K2-48": value = "EDDY CURRENT MOTOR"; break; case "K2-49": value = "MAGNETIC STIRRER"; break; case "K2-61": value = "THOMSON'S COIL"; break; case "K2-62": value = "CAN SMASHER - ELECTROMAGNETIC"; break; case "K2-63": value = "DISPLACEMENT CURRENT MODEL"; break; case "K2-64": value = "UNIPOLAR GENERATOR"; break; case "K2-65": value = "INDUCTION AND CAPACITOR FLASHLIGHT"; break; case "K3-01": value = "INDUCTION IN A TRANSFORMER"; break; case "K3-02": value = "DEMOUNTABLE TRANSFORMER - SINGLE SPARKS"; break; case "K3-03": value = "DEMOUNTABLE TRANSFORMER - V VS N - PROJ METER"; break; case "K3-04": value = "DEMOUNTABLE TRANSFORMER - V VS N - OSCILLOSCOPE"; break; case "K3-05": value = "DEMOUNTABLE TRANSFORMER - WELDER"; break; case "K3-06": value = "DEMOUNTABLE TRANSFORMER - PRIMARY CURRENT VS "; break; case "K4-01": value = "AC/DC GENERATOR"; break; case "K4-02": value = "MAGNETOELECTRIC GENERATOR WITH LAMP"; break; case "K4-03": value = "MAGNETOELECTRIC GENERATOR WITH BELL"; break; case "K4-04": value = "MAGNETOELECTRIC GENERATOR WITH AC INDICATOR BULB"; break; case "K4-05": value = "MAGNETOELECTRIC GENERATOR WITH METERS AND LOADS"; break; case "K4-06": value = "MAGNETOELECTRIC GENERATOR WITH CAPACITOR"; break; case "K4-07": value = "BICYCLE GENERATOR"; break; case "K4-08": value = "MAGNETOELECTRIC GENERATOR WITH INDUCTOR"; break; case "K4-09": value = "BICYCLE GENERATOR - LIGHT BULBs VS CFLs"; break; case "K4-21": value = "ST. LOUIS MOTOR"; break; case "K4-22": value = "DC MOTOR"; break; case "K4-23": value = "AC MOTOR"; break; case "K4-24": value = "AC/DC MOTOR"; break; case "K4-25": value = "DC MOTOR - HOMEMADE"; break; case "K4-41": value = "MOTOR-GENERATOR PAIR"; break; case "K4-51": value = "UNIPOLAR MOTOR"; break; case "K5-01": value = "PIEZOELECTRICITY"; break; case "K5-02": value = "PIEZOELECTRIC CRYSTAL - AUDIBLE"; break; case "K5-03": value = "PIEZOELECTRIC IGNITOR"; break; case "K5-04": value = "PIEZOELECTRIC GUN"; break; case "K5-11": value = "BATTERY MODEL"; break; case "K5-12": value = "BATTERY AND CURRENT - WORKING MODEL"; break; case "K5-13": value = "ELECTRIC CURRENT - MODEL"; break; case "K5-14": value = "ELECTRIC CELL"; break; case "K5-16": value = "CARRIER CURRENT DENSITY MODEL"; break; case "K5-20": value = "GIANT LIGHT BUULB"; break; case "K5-21": value = "AC PLUG CIRCUIT CHECKER"; break; case "K5-22": value = "AC PLUG CIRCUIT CHECKER CHECKER"; break; case "K5-23": value = "ROTATING TWO-COLOR LED"; break; case "K5-31": value = "OHM'S LAW"; break; case "K5-32": value = "RESISTANCE VS DIAMETER AND LENGTH"; break; case "K5-33": value = "CONDUCTIVITY OF SALT SOLUTION"; break; case "K5-34": value = "THERMAL COEFFICIENT OF RESISTANCE IN COPPER"; break; case "K5-35": value = "RESISTORS AT LN TEMPERATURE"; break; case "K5-36": value = "RESISTORS AT LN TEMPERATURE - LIGHT BULB INDICATOR"; break; case "K5-41": value = "V-I CURVES FOR OHMIC AND NON-OHMIC DEVICES"; break; case "K5-42": value = "TRANSISTOR"; break; case "K5-43": value = "NON-OHMIC DEVICE - V VS. I"; break; case "K5-44": value = "NON-OHMIC DEVICE - LIGHT BULB"; break; case "K5-45": value = "SEMICONDUCTOR MODEL"; break; case "K6-01": value = "SERIES AND PARALLEL LIGHTS - TWO BULBS"; break; case "K6-02": value = "SERIES AND PARALLEL LIGHTS - FIVE BULBS"; break; case "K6-03": value = "SERIES AND PARALLEL LIGHTS - BATTERY AND CLIP-ON WIRES"; break; case "K6-11": value = "CIRCUIT PARADOXES"; break; case "K6-12": value = "SERIES/PARALLEL LIGHT CIRCUIT CONUNDRUM"; break; case "K6-21": value = "HEATING IN CURRENT-CARRYING WIRE"; break; case "K6-22": value = "ENERGY CONVERSION - IMMERSION HEATER"; break; case "K6-23": value = "HOT DOG COOKER - 110 VAC"; break; case "K6-31": value = "THERMAL GALVANOMETER"; break; case "K6-32": value = "POTENTIOMETER"; break; case "K6-33": value = "WHEATSTONE BRIDGE"; break; case "K6-34": value = "METER WITH SHUNTS AND MULTIPLIERS"; break; case "K6-35": value = "VOLTAGE DIVIDER"; break; case "K6-36": value = "VISIBLE AMMETER"; break; case "K6-41": value = "DIODE RECTIFIERS AND FILTERS"; break; case "K6-42": value = "SINE WAVE AND RECTIFIED SINE WAVE"; break; case "K6-43": value = "POWER SUPPLY DEMONSTRATOR"; break; case "K6-44": value = "SPECTRUM OF RECTIFIED SINE WAVE"; break; case "K6-51": value = "KIRCHHOFF'S LAWS "; break; case "K6-61": value = "OSCILLATOR AND TV MONITOR"; break; case "K7-01": value = "RL CIRCUIT - 50 MICROSECOND TIME CONSTANT"; break; case "K7-02": value = "RL CIRCUIT - L/R TIME CONSTANT"; break; case "K7-03": value = "INDUCTOR DELAYING A LAMP"; break; case "K7-04": value = "RL CIRCUIT - FIELD COLLAPSE WITH FLUORESCENT BULB"; break; case "K7-05": value = "SERIES MOTOR AND LIGHT BULB CONUNDRUM"; break; case "K7-11": value = "RC CIRCUIT - RC TIME CONSTANT - "; break; case "K7-12": value = "RC CIRCUIT - RC TIME CONSTANT - PROJECTION METERS"; break; case "K7-14": value = "RC CIRCUIT - 100 MICROSECOND TIME CONSTANT"; break; case "K7-15": value = "CURRENT IN RC CIRCUIT"; break; case "K7-21": value = "RLC CIRCUIT - 10 KHZ - RESONANCE"; break; case "K7-22": value = "RLC CIRCUIT - 10 KHZ - DAMPED OSCILLATIONS"; break; case "K7-23": value = "RLC CIRCUIT - 60 HZ"; break; case "K7-24": value = "RLC CIRCUIT - 60 HZ WITH LIGHT BULB LOAD"; break; case "K7-25": value = "RLC CIRCUIT - 0.3 HZ"; break; case "K7-26": value = "RLC CIRCUIT - 0.3 HZ"; break; case "K7-27": value = "RLC CIRCUIT - COMPLETE"; break; case "K7-28": value = "RLC CIRCUIT - O.6 HZ WITH STORAGE SCOPE"; break; case "K7-29": value = "RLC CIRCUIT - 0.6 HZ - TRANSIENTS"; break; case "K7-30": value = "RLC CIRCUIT - 10 KHZ - RINGING"; break; case "K7-31": value = "RLC CIRCUIT - OVER/UNDER/CRITICAL DAMPING"; break; case "K7-41": value = "RC CIRCUIT - DIFFERENTIATION AND INTEGRATION"; break; case "K7-42": value = "BARRICADE FLASHER"; break; case "K7-43": value = "RELAXATION OSCILLATOR - NEON LAMP"; break; case "K7-44": value = "RLC CIRCUIT - 10 KHZ - DIFFERENTIATION AND INTEGRATION"; break; case "K7-45": value = "LOW AND HIGH PASS FILTERS"; break; case "K7-46": value = "PHASOR DISC"; break; case "K7-61": value = "TESLA COIL"; break; case "K8-01": value = "ELECTROMAGNETIC WAVE - MODEL"; break; case "K8-02": value = "INTRODUCTION TO LIGHT BEHAVIOR"; break; case "K8-03": value = "LIGHT NANOSECOND"; break; case "K8-04": value = "SPEED OF LIGHT"; break; case "K8-05": value = "ELECTROMAGNETIC PLANE WAVE MODEL"; break; case "K8-11": value = "MICROWAVES - STANDING WAVES"; break; case "K8-12": value = "RADIOWAVES - STANDING WAVES"; break; case "K8-13": value = "RADIOWAVES - LECHER WIRE STANDING WAVES"; break; case "K8-14": value = "RADIOWAVES - STANDING WAVES IN AN ANTENNA"; break; case "K8-21": value = "MICROWAVES - WAVE GUIDES"; break; case "K8-22": value = "MICROWAVES - TUBULAR WAVEGUIDE"; break; case "K8-31": value = "TRANSMISSION LINE SAMPLE"; break; case "K8-32": value = "PULSES IN TRANSMISSION LINES"; break; case "K8-33": value = "NANOSECOND CABLES"; break; case "K8-41": value = "HERZIAN DIPOLES"; break; case "K8-42": value = "RADIOWAVES - ENERGY AND DIPOLE PATTERN"; break; case "K8-43": value = "RADIOWAVES - FREQ MEASUREMENT WITH OSCILLOSCOPE"; break; case "K8-44": value = "RADIOWAVES - COUPLING OF WAVES"; break; case "K8-45": value = "RADIO WAVES FROM SPARK"; break; case "K8-51": value = "MICROWAVE OVEN"; break; case "K8-52": value = "MICROWAVE MAGNETRON"; break; case "L1-01": value = "ARC LAMP - PROJECTION OF ARC"; break; case "L1-02": value = "TUNGSTEN-HALOGEN LAMP - PROJECTION OF LAMP"; break; case "L1-03": value = "LIGHT BULB WITHOUT VACUUM"; break; case "L1-04": value = "POINT SOURCE - FLASHLIGHT BULB"; break; case "L1-05": value = "PERSISTANCE OF A FILAMENT"; break; case "L1-11": value = "INVERSE SQUARE LAW - LIGHT BULB AND "; break; case "L1-12": value = "INVERSE SQUARE LAW - OVERHEAD PROJECTOR AND TWO-METER STICK"; break; case "L1-21": value = "PINHOLE IMAGE - GROUND GLASS SCREEN"; break; case "L1-22": value = "OPTICAL BOARD - PINHOLE CAMERA"; break; case "L1-23": value = "PINHOLE POLAROID CAMERA"; break; case "L1-24": value = "PINHOLE TV CAMERA"; break; case "L1-31": value = "LASER LIGHT CAVITY"; break; case "L1-32": value = "VISIBLE LASER"; break; case "L1-33": value = "LASER BEAM EXPANDERS"; break; case "L2-01": value = "OPTICAL BOARD - PLANE MIRROR"; break; case "L2-02": value = "OPTICAL BOARD - RAY DIAGRAM - PLANE MIRROR"; break; case "L2-03": value = "MICROWAVES - REFLECTION"; break; case "L2-04": value = "VIRTUAL IMAGE DETECTOR - PLANE MIRROR"; break; case "L2-05": value = "PERVERTED IMAGE - AXES IN MIRROR"; break; case "L2-06": value = "MAGIC TRICK - DISAPPEARING RABBIT"; break; case "L2-07": value = "PERVERTED IMAGE - LIGHT"; break; case "L2-21": value = "OPTICAL BOARD - HALF-SILVERED MIRROR"; break; case "L2-22": value = "INFINITY MIRROR"; break; case "L2-23": value = "MIRROR BOX"; break; case "L2-24": value = "PARTIALLY SILVERED CYLINDER"; break; case "L2-25": value = "LIGHT BULB IN WATER"; break; case "L2-26": value = "HALF-SILVERED MIRROR - RAT IN TUBE"; break; case "L2-41": value = "OPTICAL BOARD - CORNER REFLECTOR"; break; case "L2-42": value = "CORNER REFLECTOR - MIRROR TILES"; break; case "L2-43": value = "CORNER REFLECTOR - ROTATING"; break; case "L2-44": value = "CORNER REFLECTOR - HAND HELD"; break; case "L2-45": value = "MICROWAVES - CORNER REFLECTOR"; break; case "L2-46": value = "CORNER REFLECTOR - MODELS"; break; case "L2-61": value = "MIRROR TILES WITH LIGHT BULB"; break; case "L2-62": value = "MULTIPLE REFLECTIONS WITH MIRROR TILES"; break; case "L2-63": value = "TELEIDOSCOPE"; break; case "L2-64": value = "DUCK-IN KALEIDOSCOPE"; break; case "L2-65": value = "METAMORPHOSIS OF A CUBE"; break; case "L3-01": value = "OPTICAL BOARD - CONVEX SPHERICAL MIRROR"; break; case "L3-02": value = "OPTICAL BOARD - RAY DIAGRAM - CONVEX MIRROR"; break; case "L3-03": value = "LARGE CONVEX MIRROR"; break; case "L3-11": value = "OPTICAL BOARD - CONCAVE SPHERICAL MIRROR"; break; case "L3-12": value = "OPTICAL BOARD - RAY DIAGRAM - CONCAVE "; break; case "L3-13": value = "OPTICAL BOARD - SPHERICAL ABERRATION IN CONCAVE MIRROR"; break; case "L3-14": value = "LARGE CONCAVE MIRROR"; break; case "L3-15": value = "ROTATING LIQUID MIRROR"; break; case "L3-16": value = "FOCUSING OF HEAT WAVES BY MIRRORS"; break; case "L3-17": value = "FOCUSING OF HEAT WAVES - ARC LAMP AND PARABOLIC MIRROR"; break; case "L3-18": value = "FOCUSING OF HEAT WAVES - OVERHEAD PROJECTOR"; break; case "L3-19": value = "PENNY AND PARABOLIC MIRRORS"; break; case "L3-20": value = "APPARENT REFLECTION FROM REAL IMAGE"; break; case "L3-21": value = "LIGHT BULB AND PARABOLIC MIRROR"; break; case "L3-22": value = "PENDULUM AND SPHERICAL MIRROR"; break; case "L3-23": value = "IMAGE ON SCREEN USING CONCAVE MIRROR"; break; case "L3-24": value = "OPTICAL BOARD - SPHERICAL AND PARABOLIC "; break; case "L3-25": value = "IMAGE LOCATION WITH TV CAMERA - CONCAVE MIRROR"; break; case "L3-31": value = "GIANT MIRROR - CONCAVE AND CONVEX"; break; case "L3-32": value = "CYLINDRICAL MIRROR DEMONSTRATOR"; break; case "L3-33": value = "VANITY MIRROR"; break; case "L3-41": value = "ANAMORPHIC ART"; break; case "L3-42": value = "CHAOS - FOUR REFLECTING SPHERES"; break; case "L4-01": value = "OPTICAL BOARD - RECTANGULAR SLAB"; break; case "L4-02": value = "REFRACTION - BEER MUG IN WATER"; break; case "L4-03": value = "REFRACTION - ROD IN WATER"; break; case "L4-04": value = "REFRACTION - CAN IN WATER TANK"; break; case "L4-05": value = "REFRACTION IN FISH TANK - PORTABLE"; break; case "L4-06": value = "REFRACTION IN CLOUDY WATER"; break; case "L4-21": value = "SNELL'S LAW - IMAGE DISTORTION"; break; case "L4-22": value = "MIRAGE - LASER AND HOT WIRE"; break; case "L4-23": value = "BENDING OF LASER BEAM IN SUGAR SOLUTION"; break; case "L4-31": value = "DISAPPEARANCE OF GLASS IN LIQUID"; break; case "L4-41": value = "MICROWAVES - REFRACTION BY PRISM"; break; case "L4-42": value = "MICROWAVES - INDEX OF REFRACTION"; break; case "L5-01": value = "OPTICAL BOARD - TOTAL INTERNAL REFLECTION"; break; case "L5-02": value = "TOTAL INTERNAL REFLECTION IN LONG TANK"; break; case "L5-03": value = "FISH IN TANK - TOTAL INTERNAL REFLECTION"; break; case "L5-04": value = "MICROWAVES - TOTAL INTERNAL REFLECTION"; break; case "L5-05": value = "IMAGE INVERSION BY PRISM"; break; case "L5-11": value = "LASER WATERFALL"; break; case "L5-12": value = "PLEXIGLASS SPIRAL"; break; case "L5-13": value = "PLEXIGLASS SPIRAL WITH LASER"; break; case "L5-14": value = "LASER AND PLEXIGLASS TUBE"; break; case "L5-21": value = "FIBER OPTICS ARRAY"; break; case "L5-22": value = "FIBER OPTICS ARRAY - PROJECTION"; break; case "L5-23": value = "FIBER OPTICS TREE"; break; case "L5-24": value = "FIBER OPTICS - COMMUNICATION LINE"; break; case "L5-34": value = "FRUSTRATED TOTAL INTERNAL REFLECTION - MICROWAVES"; break; case "L6-01": value = "OPTICAL BOARD - CONVERGING SPHERICAL LENS"; break; case "L6-02": value = "OPTICAL BOARD - CIRCULAR SLAB"; break; case "L6-03": value = "OPTICAL BOARD - HYPERBOLIC LENS"; break; case "L6-04": value = "OPTICAL BOARD - RAY DIAGRAM - REAL IMAGE POS LENS"; break; case "L6-05": value = "OPTICAL BOARD - RAY DIAGRAM - VIRTUAL IMAGE "; break; case "L6-06": value = "MULTIPLE PINHOLES AND LENS RECOMBINATION"; break; case "L6-07": value = "MICROWAVES - LENS"; break; case "L6-08": value = "REAL IMAGE OF CONVERGING LENS - LIGHT BULB"; break; case "L6-09": value = "REAL IMAGE OF CONVERGING LENS"; break; case "L6-10": value = "IMAGE LOCATION WITH TV CAMERA - LENS"; break; case "L6-11": value = "OPTICAL BOARD - DEPTH OF FIELD"; break; case "L6-12": value = "MAGNIFYING LENS IN WATER"; break; case "L6-13": value = "OPTICAL BOARD - PARALLEL RAY FOCUS"; break; case "L6-14": value = "IMAGE OF CONVEX LENS - WITH AND WITHOUT BAFFLE"; break; case "L6-21": value = "OPTICAL BOARD - DIVERGING SPHERICAL LENS"; break; case "L6-22": value = "OPTICAL BOARD - RAY DIAGRAM - VIRTUAL IMAGE NEG LENS"; break; case "L6-31": value = "STRING MODEL - SPHERICAL ABERRATION"; break; case "L6-32": value = "OPTICAL BOARD - SPHERICAL ABERRATION IN LENS"; break; case "L6-33": value = "STRING MODEL - CHROMATIC ABERRATION"; break; case "L6-34": value = "OPTICAL BOARD - CHROMATIC ABERRATION IN LENS"; break; case "L6-35": value = "CHROMATIC ABERRATION - ARC LAMP AND 200 MM LENS"; break; case "L6-36": value = "STRING MODEL - ASTIGMATISM"; break; case "L6-37": value = "ASTIGMATISM"; break; case "L6-38": value = "COMA"; break; case "L6-39": value = "DISTORTION - PINCUSHION AND BARREL WITH 2 IRISES"; break; case "L6-40": value = "DISTORTION - PINCUSHION AND BARREL"; break; case "L6-41": value = "DISTORTED IMAGE - PINCUSHION AND BARREL"; break; case "L6-42": value = "DISTORTION AND CORRECTION"; break; case "L6-51": value = "OPTICAL BOARD - FRESNEL LENS"; break; case "L6-52": value = "FRESNEL LENSES - MISCELLANEOUS"; break; case "L6-53": value = "FRESNEL LENS MAGNIFIER"; break; case "L6-54": value = "OPTICALLY PROGRAMMED TRAFFIC SIGNAL - MODEL"; break; case "L6-55": value = "FRESNEL FLASHLIGHT"; break; case "L6-56": value = "FRESNEL SPOTLIGHT"; break; case "L6-71": value = "OPTICAL DISC"; break; case "L6-91": value = "ANAMORPHIC LENS"; break; case "L7-01": value = "LIGHT METERS"; break; case "L7-02": value = "FOCAL PLANE SHUTTER"; break; case "L7-03": value = "SHUTTER SPEED OF A CAMERA"; break; case "L7-04": value = "DEPTH OF FIELD AND FIELD OF VIEW"; break; case "L7-05": value = "VIDEO CAMERA WITH VARIOUS LENSES"; break; case "L7-06": value = "MINICAM WITH WIDE-ANGLE, TELEPHOTO AND MACROZOOM LENS"; break; case "L7-11": value = "OPTICAL BOARD - ASTRONOMICAL TELESCOPE"; break; case "L7-12": value = "OPTICAL BOARD - TELEPHOTO LENS"; break; case "L7-13": value = "OPTICAL BOARD - GALILEAN TELESCOPE"; break; case "L7-14": value = "OPTICAL BOARD - REFLECTING TELESCOPE"; break; case "L7-15": value = "MICROSCOPE"; break; case "L7-16": value = "GALILEOSCOPE"; break; case "L7-21": value = "MAGNIFYING GLASS - TV"; break; case "L7-22": value = "MICROSCOPE - TV"; break; case "L7-23": value = "ASTRONOMICAL TELESCOPE - TV"; break; case "L7-24": value = "TERRESTRIAL TELESCOPE - TVkw"; break; case "L7-25": value = "GALILEAN TELESCOPE - TV"; break; case "L7-31": value = "PRINCIPAL PLANES"; break; case "L7-32": value = "FIELD LENS"; break; case "L7-33": value = "OVERHEAD PROJECTOR - DISSECTED"; break; case "L7-34": value = "SLIDE PROJECTOR - DISSECTED"; break; case "L7-41": value = "REAL IMAGE - MIRROR AND LENS"; break; case "L7-42": value = "VIRTUAL IMAGE - MIRROR AND LENS"; break; case "M1-01": value = "LASER DIFFRACTION - FIXED SINGLE SLIT"; break; case "M1-02": value = "LASER DIFFRACTION - VARIABLE SINGLE SLIT"; break; case "M1-03": value = "SINGLE SLIT DIFFRACTION - FRESNEL & FRAUNHOFFER"; break; case "M1-04": value = "LASER DIFFRACTION - WIRES"; break; case "M1-05": value = "FINGERS AND SODIUM SOURCE - VARIABLE SINGLE SLIT"; break; case "M1-06": value = "LASER DIFFRACTION - HUMAN HAIR"; break; case "M1-11": value = "LASER DIFFRACTION - FIXED DOUBLE SLITS"; break; case "M1-12": value = "INTERFERENCE - TRANSPARENCIES"; break; case "M1-13": value = "INTERFERENCE - KLINGER TRANSPARENT SLIDES"; break; case "M1-14": value = "MICROWAVES - INTERFERENCE OF TWO POINT SOURCES"; break; case "M1-15": value = "MICROWAVES - YOUNG'S DOUBLE SLIT INTERFERENCE"; break; case "M1-16": value = "INTERFERENCE OF LIGHT - SOUND WAVE MODEL"; break; case "M1-21": value = "LASER DIFFRACTION - MULTIPLE SLITS"; break; case "M1-22": value = "LASER DIFFRACTION - GRATINGS"; break; case "M1-31": value = "PORTABLE LASER DIFFRACTION KIT"; break; case "M1-32": value = "SLITFILMS AND LONG FILAMENT BULB"; break; case "M1-33": value = "LASER DIFFRACTION - PHONOGRAPH RECORD"; break; case "M1-34": value = "LASER DIFFRACTION - COMPACT DISC"; break; case "M1-35": value = "LASER DIFFRACTION - VIDEODISC"; break; case "M1-41": value = "PEACOCK FEATHER"; break; case "M1-42": value = "IRIDESCENT GREEN JUNE BEETLE"; break; case "M2-01": value = "LASER DIFFRACTION - PINHOLES"; break; case "M2-02": value = "LASER DIFFRACTION - OPAQUE DISCS"; break; case "M2-03": value = "LASER DIFFRACTION - POISSON'S BRIGHT SPOT"; break; case "M2-04": value = "LASER DIFFRACTION - HALO"; break; case "M2-05": value = "PINHOLE AND OPAQUE DISC - FRESN & FRAUN DIFFRAC"; break; case "M2-11": value = "LASER DIFFRACTION - FRESNEL ZONE PLATE"; break; case "M2-12": value = "LASER DIFFRACTION - FRESNEL ZONE PLATE - FOCAL "; break; case "M2-21": value = "MICROWAVES - DIFFRACTION BY CIRCULAR APERTURE"; break; case "M2-22": value = "MICROWAVES - DIFFRACTION BY A SPHERE"; break; case "M2-23": value = "MICROWAVES - FRESNEL ZONES"; break; case "M2-31": value = "HALO BY DIFFRACTION FROM SMALL "; break; case "M3-01": value = "MICHELSON INTERFEROMETER - LASER LIGHT"; break; case "M3-02": value = "MICHELSON INTERFEROMETER - WHITE LIGHT"; break; case "M3-03": value = "MICHELSON INTERFEROMETER - MERCURY LIGHT"; break; case "M3-04": value = "MICHELSON INTERFEROMETER - SODIUM LIGHT"; break; case "M3-05": value = "MICHELSON INTERFEROMETER - COMPONENT MODEL"; break; case "M3-06": value = "MICHELSON INTERFEROMETER - GAS CELL"; break; case "M3-21": value = "MICROWAVES - MICHELSON INTERFEROMETER"; break; case "M3-31": value = "INTERFEROMETER MODEL - MOIRE PATTERNS"; break; case "M3-41": value = "FABRY-PEROT INTERFEROMETER - LASER LIGHT"; break; case "M3-42": value = "FABRY-PEROT INTERFEROMETER - SODIUM "; break; case "M4-01": value = "INTERFERENCE IN THIN MICA SHEET - PROJECTION"; break; case "M4-02": value = "NEWTON'S RINGS - PROJECTION"; break; case "M4-03": value = "WEDGE INTERFERENCE FILTER"; break; case "M4-04": value = "INTERFERENCE BETWEEN GLASS PLATES"; break; case "M4-11": value = "ANTI-REFLECTIVE COATING"; break; case "M4-12": value = "DICHROIC FILTERS"; break; case "M4-21": value = "SOAP FILM INTERFERENCE - SIMPLE LARGE VERSION"; break; case "M4-22": value = "SOAP FILM INTERFERENCE - PROJECTION"; break; case "M4-23": value = "SOAP FILM INTERFERENCE - ROTATING HEMISPHERE"; break; case "M4-24": value = "SOAP FILM INTERFERENCE - CORRIDOR DISPLAY"; break; case "M4-25": value = "INTERFERENCE IN LARGE SOAP FILM - SODIUM AND WHITE"; break; case "M4-31": value = "IRIDESCENT BOTTLE"; break; case "M5-01": value = "LASER DIFFRACTION - TWO DIMENSIONAL GRATINGS"; break; case "M5-02": value = "LASER DIFFRACTION - MESHES"; break; case "M5-03": value = "LASER DIFFRACTION - OPTICAL CRYSTALS"; break; case "M5-04": value = "LASER DIFFRACTION - EXOTIC ARRAYS"; break; case "M5-11": value = "LASER DIFFRACTION - PIN POINT"; break; case "M5-12": value = "LASER DIFFRACTION - RAZOR EDGE"; break; case "M5-21": value = "LASER INTERFERENCE - FRESNEL'S MIRROR"; break; case "M5-22": value = "LASER INTERFERENCE - LLOYD'S MIRROR"; break; case "M5-23": value = "LLOYD'S MIRROR - WHITE LIGHT"; break; case "M5-24": value = "LASER INTERFERENCE - FRESNEL'S BIPRISM"; break; case "M5-25": value = "FRESNEL BIPRISM - WHITE LIGHT"; break; case "M5-26": value = "LASER INTERFERENCE - FRONT AND REAR LENS SURFACES"; break; case "M5-31": value = "FRAUNHOFER DIFFRACTION AND SPATIAL FILTERING - VERS 1"; break; case "M5-32": value = "FRAUNHOFER DIFFRACTION AND SPATIAL FILTERING - VERS 2"; break; case "M5-33": value = "FRAUNHOFER DIFFRACTION AND SPATIAL FILTERING - VERS 3"; break; case "M5-41": value = "SCHLIEREN IMAGES - CONVECTION CURRENTS"; break; case "M5-42": value = "SCHLIEREN IMAGES - CONVECTION CURRENTS - TV"; break; case "M5-43": value = "SCHLIEREN EFFECT - WHITE LIGHT"; break; case "M5-44": value = "DARK FIELD IMAGES"; break; case "M5-51": value = "OPTICAL TRANSFER FUNCTION - DEP ON SPATIAL "; break; case "M6-01": value = "HOLOGRAM - LASER LIGHT - VOLKSWAGEN"; break; case "M6-02": value = "HOLOGRAM - LASER LIGHT - THE SCIENTIST"; break; case "M6-03": value = "HOLOGRAM - LASER LIGHT - MISC INDIVIDUAL VIEWING"; break; case "M6-11": value = "HOLOGRAM - MULTIPLEX - BASEBALL"; break; case "M6-12": value = "HOLOGRAM - MULTIPLEX - THE KISS"; break; case "M6-13": value = "HOLOGRAM - MULTIPLEX - KING KONG"; break; case "M6-21": value = "HOLOGRAM - REFLECTION - MARCHING BAND"; break; case "M6-22": value = "HOLOGRAM - REFLECTION - ORRERY"; break; case "M6-23": value = "HOLOGRAM - REFLECTION - OWLS"; break; case "M6-24": value = "HOLOGRAM - REFLECTION - WEREWOLF"; break; case "M7-01": value = "MICROWAVES - POLARIZATION"; break; case "M7-02": value = "RADIOWAVES - POLARIZATION"; break; case "M7-03": value = "POLAROIDS AND GOOSENECK LAMP"; break; case "M7-04": value = "MALUS' LAW"; break; case "M7-05": value = "ROPE AND COOKIE COOLERS"; break; case "M7-06": value = "ROPE WAVE GENERATOR - POLARIZATION"; break; case "M7-07": value = "CROSSED POLAROIDS - E FIELD COMPONENTS"; break; case "M7-08": value = "MICROWAVES - MALUS' LAW"; break; case "M7-11": value = "OPTICAL BOARD - BREWSTER'S ANGLE"; break; case "M7-12": value = "BREWSTER'S ANGLE - POLAROID AND TWO REFLECTORS"; break; case "M7-13": value = "BREWSTER'S ANGLE - SEMICIRCULAR LUCITE SLAB"; break; case "M7-14": value = "BREWSTER'S WINDOW"; break; case "M7-15": value = "LINEAR AND ELLIP POLARIZATION - REFL FROM DIEL AND COND"; break; case "M7-16": value = "REFLECTION OF POLARIZED LIGHT FROM CONDUCTOR & DIELECTRIC"; break; case "M7-17": value = "REFLECTION OF LIGHT FROM DIELECTRIC AND CONDUCTOR"; break; case "M7-18": value = "POLAROID SUNGLASSES"; break; case "M7-31": value = "TYNDALL'S EXPERIMENT - COLLOIDAL SUNSET"; break; case "M7-32": value = "TRANSVERSE NATURE OF LIGHT"; break; case "M7-33": value = "DEPOLARIZATION BY SCATTERING - WAX PAPER"; break; case "M7-34": value = "ROTATION OF POLARIZATION - POLAROID AND WAX PAPER"; break; case "M7-41": value = "SCATTERING OF LASER BEAM"; break; case "M8-01": value = "POLAROIDS AND KARO SYRUP"; break; case "M8-02": value = "OPTICAL ACTIVITY - GLASS IN KARO SYRUP TANK"; break; case "M8-03": value = "OPTICAL ACTIVITY IN KARO SYRUP CYLINDERS"; break; case "M8-04": value = "OPTICAL ACTIVITY IN KARO SYRUP TANK"; break; case "M8-05": value = "POLAROIDS AND KARO SYRUP - SPECTRUM"; break; case "M8-06": value = "SUGAR IN SOLUTION IN TUBE - BARBER POLE"; break; case "M8-11": value = "OPTICAL ACTIVITY - ROSE AND BUTTERFLY"; break; case "M8-12": value = "POLARIZED COLOR SLIDE SET"; break; case "M8-13": value = "POLAGE"; break; case "M8-14": value = "PHOTOELASTICITY"; break; case "M8-21": value = "CALCITE BIREFRINGENCE"; break; case "M8-22": value = "NICOL PRISM"; break; case "M8-31": value = "LIQUID CRYSTALS"; break; case "M9-01": value = "ELIPTICAL POLARIZATION - MECHANICAL MODEL"; break; case "M9-02": value = "CIRCULAR POLARIZATION - ROTATING VECTOR MODEL"; break; case "M9-03": value = "CIRCULAR POLARIZATION - STICK MODEL"; break; case "M9-11": value = "MICROWAVES - ELLIPTICAL POLARIZATION"; break; case "M9-21": value = "QUARTER WAVE PLATE"; break; case "M9-22": value = "HALF WAVE PLATE"; break; case "M9-23": value = "CIRCULARLY POLARIZED LIGHT"; break; case "M9-31": value = "OPTICAL RING SIGHT"; break; case "M9-32": value = "REALD 3-D GLASSES "; break; case "N1-01": value = "PRISMATIC SPECTRUM OF WHITE LIGHT - POINT SOURCE"; break; case "N1-02": value = "PRISMATIC SPECTRUM OF WHITE LIGHT - INCANDESCENT"; break; case "N1-03": value = "PRISMATIC SPECTRUM OF WHITE LIGHT - WATER PRISM"; break; case "N1-04": value = "PRISMATIC SPECTRUM OF WHITE LIGHT - PORTABLE MODEL"; break; case "N1-05": value = "SPECTRA - VISIBLE AND INVISIBLE"; break; case "N1-06": value = "POLYPRISM SPECTRA"; break; case "N1-07": value = "VARIATION OF SPECTRUM WITH LAMP INTENSITY"; break; case "N1-08": value = "GOETHE'S PUZZLE"; break; case "N1-09": value = "COMPLEMENTARY SPECTRUM"; break; case "N1-11": value = "DIFFRACTION SPECTRUM OF WHITE LIGHT - POINT SOURCE"; break; case "N1-12": value = "DIFFRACTION SPECTRA - GRATINGS ON OVERHEAD PROJECTOR"; break; case "N1-13": value = "DIFFRACTION SPECTRUM OF WHITE LIGHT - PORTABLE"; break; case "N1-14": value = "REFLECTION GRATING - LARGE"; break; case "N1-21": value = "COLOR SEPARATION AND RECOMBINATION BY PRISMS"; break; case "N1-22": value = "OPTICAL BOARD - PRISMS - SEPARATE AND RECOMBINE"; break; case "N1-23": value = "FINE RESOLUTION OF SPECTRUM USING TWO PRISMS"; break; case "N1-31": value = "SUN DOG - MODEL"; break; case "N1-32": value = "ICE CRYSTALS - PAPER MODELS"; break; case "N1-41": value = "RAINDROP RAY MODEL"; break; case "N1-42": value = "RAINDROP MECHANICAL MODEL"; break; case "N1-43": value = "RAINBOW - GLASS BEAD MODEL"; break; case "N1-44": value = "RAINBOW - OPTICAL BOARD"; break; case "N1-45": value = "RAINBOW - WATER FLASK"; break; case "N1-51": value = "SPECTROMETER - HAND-HELD"; break; case "N1-61": value = "REFRACTION OF LIGHT IN DIAMOND"; break; case "N2-01": value = "DIFFRACTION SPECTRUM OF MERCURY"; break; case "N2-02": value = "DIFFRACTION SPECTRA - THREE SOURCES - EXPENDABLE GRATINGS"; break; case "N2-03": value = "DIFFRACTION SPECTRUM OF SODIUM - EXPENDABLE GRATINGS"; break; case "N2-04": value = "DIFFRACTION SPECTRUM OF SODIUM - PROJECTION"; break; case "N2-05": value = "DIFFRACTION SPECTRA - MISCELLANEOUS TUBES"; break; case "N2-06": value = "DIFFRACTION SPECTRUM OF MERCURY - SUPERPRESSURE LAMP"; break; case "N2-07": value = "DIFFRACTION SPECTRUM OF HYDROGEN - HOLOGRAPHIC GRATINGS"; break; case "N2-08": value = "SPECTROSCOPE"; break; case "N2-09": value = "SPECTROPHOTOMETER"; break; case "N2-21": value = "PRISMATIC SPECTRUM OF MERCURY - SUPERPRESSURE LAMP"; break; case "N2-22": value = "PRISMATIC SPECTRUM OF SODIUM"; break; case "N2-31": value = "ABSORPTION SPECTRUM OF CHLOROPHYLL"; break; case "N2-32": value = "ABSORPTION SPECTRA OF GLASS"; break; case "N3-01": value = "ADDITIVE COLOR MIXING OF LIGHTS"; break; case "N3-02": value = "ADDITIVE COLOR MIXING - PROJECTORS"; break; case "N3-03": value = "COLOR MIXING WITH DICHROIC SPOTLIGHTS"; break; case "N3-04": value = "POSITIVE COLOR MIXING IN COLOR TV"; break; case "N3-05": value = "COLOR MIXING VIA CHROMATICITY DIAGRAM"; break; case "N3-06": value = "COLOR WHEEL"; break; case "N3-07": value = "COLOR WHEEL - FLUORESCENT"; break; case "N3-08": value = "STROBOSCOPIC COLOR WHEEL"; break; case "N3-09": value = "COLOR THEORY SLIDE"; break; case "N3-10": value = "WHITE LIGHTNING STICK"; break; case "N3-11": value = "RGB SNAP LIGHTS AND SPINNER"; break; case "N3-21": value = "ADDITIVE FILTERS AND THEIR SPECTRA"; break; case "N3-22": value = "SUBTRACTIVE FILTERS AND THEIR SPECTRA"; break; case "N3-23": value = "COLOR PERCEPTION WITH DYES AND FILTERS"; break; case "N3-24": value = "FILTERGRAPH"; break; case "N3-25": value = "SERIES RED FILTERS"; break; case "N3-26": value = "COLOR FILTER SETS"; break; case "N3-27": value = "NEGATIVE FILTERS IN SERIES"; break; case "N3-28": value = "HOLLOW PRISM"; break; case "N3-31": value = "COLOR SEPARATION TRANSPARENCIES"; break; case "N3-32": value = "COLOR SEPARATION TRANSPARENCIES - LARGE"; break; case "N3-33": value = "MAXWELL'S EXPERIMENT - THREE-COLOR MIXING"; break; case "N3-41": value = "SPLITTING OF SPECTRUM INTO COMPLEMENTARY COLORS"; break; case "N3-42": value = "COLOR MIXING IN PRINTER - CHART"; break; case "N3-43": value = "COLORS REFLECTED FROM COLORED OBJECTS"; break; case "N3-44": value = "THE COLOR OF COPPER"; break; case "N3-45": value = "REFLECTION AND TRANSMISSION FROM GOLD FOIL"; break; case "N3-51": value = "SPECTRUM WITH MINICAM AND VIDEO "; break; case "O1-01": value = "EYE MODEL - OPTICS"; break; case "O1-02": value = "EYE OPTICS MODEL - INDIVIDUAL VIEWING"; break; case "O1-03": value = "IMAGE INVERSION ON RETINA"; break; case "O1-04": value = "IMAGE INVERSION ON RETINA - INDIVIDUAL "; break; case "O1-05": value = "EYESCOPE"; break; case "O1-11": value = "TEST OF NEARSIGHTEDNESS VS. FARSIGHTEDNESS"; break; case "O1-21": value = "CHROMATIC ABERRATION IN EYE"; break; case "O1-22": value = "SPHERICAL ABERRATION IN EYE USING PINHOLE"; break; case "O1-23": value = "ASTIGMATISM - ON AXIS"; break; case "O1-31": value = "MACH BANDS"; break; case "O1-32": value = "DARK AXLE"; break; case "O1-41": value = "FLOATERS"; break; case "O2-01": value = "PERSISITENCE OF VISION - ELECTRONIC FLASH"; break; case "O2-02": value = "ZOETROPE AND PRAXINOSCOPE"; break; case "O2-03": value = "PERSISTENCE OF VISION - MAGIC WAND"; break; case "O2-11": value = "PULFRICH PENDULUM"; break; case "O2-12": value = "PULFRICH PENDULUM - BIFILAR SUSPENSION"; break; case "O2-13": value = "PULFRICH PHENOMENON - ROTATING CRYSTAL MODEL"; break; case "O2-14": value = "VISUAL LATENCY - REACTION TIME"; break; case "O2-21": value = "STROBOSCOPIC CENCO"; break; case "O2-22": value = "STROBOSCOPE AND FALLING WATER"; break; case "O2-23": value = "STROBOSCOPIC DISCS"; break; case "O3-01": value = "COLOR PERCEPTION IN SHADOWS - SLIDE PROJECTORS"; break; case "O3-02": value = "COLOR PERCEPTION IN SHADOWS - DOUBLE POINT SOURCE"; break; case "O3-03": value = "LAND EFFECT"; break; case "O3-04": value = "GREENER THAN GREEN"; break; case "O3-11": value = "COLOR BLINDNESS TEST"; break; case "O3-12": value = "COLOR BLINDNESS TESTS WITH VIDEO PROJECTOR"; break; case "O3-21": value = "BENHAM TOP"; break; case "O3-22": value = "BIDWELL'S DISC"; break; case "O4-01": value = "SCIENCE"; break; case "O4-02": value = "PARIS IN THE SPRING - EXPECTATIONS"; break; case "O4-03": value = "OPTICAL ILLUSION SLIDES - BLACK AND WHITE"; break; case "O4-04": value = "OPTICAL ILLUSION SLIDES - COLOR"; break; case "O4-05": value = "OPTICAL ILLUSION PRINTS"; break; case "O4-06": value = "OPTICS OF A GLASS ROD"; break; case "O4-07": value = "OPTICAL ILLUSIONS - MISCELLANEOUS"; break; case "O4-08": value = "GREEN TOMATO"; break; case "O4-11": value = "HEADLESS WOMAN"; break; case "O4-12": value = "SAWING LASER BEAM WITH COMB"; break; case "O4-13": value = "FEEDBACK PATTERNS WITH B&W TV CAMERA AND MONITOR"; break; case "O4-21": value = "TRAVELLING LIGHT ILLUSION"; break; case "O4-22": value = "CORNSWEET ILLUSION"; break; case "O4-23": value = "LIGHT PISTON"; break; case "O4-24": value = "DISTORTED FACE ILLUSION"; break; case "O4-25": value = "RINSING ILLUSION"; break; case "O4-31": value = "TRAPEZOIDAL WINDOW"; break; case "O4-32": value = "SIZE OF COLORED FIGURES"; break; case "O4-33": value = "IMPOSSIBLE TRIANGLE"; break; case "O4-34": value = "IMPOSSIBLE CRATE"; break; case "O4-35 ": value = "WALK-IN BOX"; break; case "O4-36": value = "PERSPECTIVE BOX - CHAIR"; break; case "O4-40": value = "MIRAGE"; break; case "O4-51": value = "ANAGLYPH"; break; case "O4-52": value = "POLARIZATION - 3D EFFECT"; break; case "O4-53": value = "STEREOGRAMS - 3D IMAGES FROM RANDOM PATTERNS"; break; case "O4-54": value = "VIEWMASTER"; break; case "P1-01": value = "MICHELSON-MORLEY EXPERIMENT - MODEL"; break; case "P1-02": value = "LOCAL INERTIAL FRAME OF REFERENCE"; break; case "P1-11": value = "CURVATURE OF SPACE"; break; case "P1-12": value = "SPACETIME DIAGRAM IN 3D - EARTH ORBITING SUN"; break; case "P1-21": value = "EINSTEIN'S RELATIVITY EXPERIMENT"; break; case "P2-01": value = "PHOTOELECTRIC EFFECT AND PLANCK'S CONSTANT"; break; case "P2-02": value = "PHOTOELECTRIC EFFECT IN ZINC - ARC LAMP"; break; case "P2-03": value = "PHOTOELECTRIC EFFECT IN ZINC - UV LAMP"; break; case "P2-04": value = "PHOTOELECTRIC PROPELLER"; break; case "P2-05": value = "PHOTO-RESISTOR RELAY"; break; case "P2-06": value = "PHOTOELECTRIC TRUCK"; break; case "P2-11": value = "INTERFERENCE OF PHOTONS"; break; case "P2-12": value = "X-RAY DIFFRACTION MODEL"; break; case "P2-13": value = "ELECTRON DIFFRACTION"; break; case "P2-14": value = "ELECTRON DIFFRACTION MODEL"; break; case "P2-15": value = "WAVE PACKETS - OSCILLATORS"; break; case "P2-20": value = "FLUORESCENCE"; break; case "P2-21": value = "BLACK BODY MODEL"; break; case "P2-22": value = "BICHSEL BOXES - BLACK BODY RADIATION"; break; case "P2-31": value = "E/M OF ELECTRON APPARATUS"; break; case "P2-41": value = "POTENTIAL WELL - HILL TRACK MODEL"; break; case "P2-42": value = "PARTICLE IN A BOX - 1D, CLASSICAL - Q.M. INTRO"; break; case "P2-43": value = "CLASSICAL HARMONIC OSCILLATOR - Q.M. INTRO"; break; case "P2-51": value = "OPTICAL ANALOG TO QM STATES AND OPERATORS"; break; case "P2-61": value = "DIRAC ROPE TRICK"; break; case "P3-01": value = "PERIODIC CHART"; break; case "P3-02": value = "ATOMIC ELECTRON ORBITAL MODELS"; break; case "P3-11": value = "LANGMUIR EXPERIMENT"; break; case "P3-21": value = "CATHODE-RAY TUBE - SHADOW EFFECT - MALTESE CROSS"; break; case "P3-22": value = "CATHODE-RAY TUBE - CANAL RAYS"; break; case "P3-23": value = "CATHODE-RAY TUBE - FLUORESCENCE EFFECT"; break; case "P3-24": value = "CATHODE-RAY TUBES - MISCELLANEOUS"; break; case "P3-25": value = "CATHODE-RAY TUBE - CONCAVE CATHODE"; break; case "P3-31": value = "X-RAY TUBE"; break; case "P3-41": value = "FRANCK-HERTZ EXPERIMENT"; break; case "P3-51": value = "BALMER SERIES"; break; case "P3-52": value = "RESONANCE RADIATION"; break; case "P3-53": value = "ATOMIC ENERGY LEVEL MODEL"; break; case "P3-54": value = "ENERGY LEVELS - BALLS AND LADDER"; break; case "P3-61": value = "FLUORESCENT LIQUIDS"; break; case "P3-62": value = "FLUORESCENT CHALK"; break; case "P3-63": value = "WAVELENGTH SHIFTER BAR"; break; case "P3-64": value = "PHOSPHORESCENCE - BLACK LIGHT AND OSCILLOSCOPE "; break; case "P3-65": value = "WINTERGREEN MINTS"; break; case "P3-66": value = "FLUORESCENCE AT LN TEMPERATURE"; break; case "P3-67": value = "FLUORESCENCE OF LAUNDRY SOAP"; break; case "P3-71": value = "VISIBLE LASER"; break; case "P4-01": value = "GEIGER COUNTER"; break; case "P4-03": value = "RADON DETECTION"; break; case "P4-04": value = "COSMIC RAYS"; break; case "P4-05": value = "PHOTOMULTIPLIER TUBE - LARGE"; break; case "P4-06": value = "RADIOACTIVE CONSUMER PRODUCTS"; break; case "P4-07": value = "SHRINK TUBE - IRRADIATED POLYMER"; break; case "P4-08": value = "IONIZATION SMOKE ALARM"; break; case "P4-11": value = "RADIOACTIVE DECAY - DICE"; break; case "P4-12": value = "EXPONENTIAL DECAY - WATER MODEL"; break; case "P4-13": value = "HALF LIFE OF BARIUM 137"; break; case "P4-14": value = "RADIOACTIVE DECAY CHAIN - WATER MODEL"; break; case "P4-21": value = "NUCLIDES CHART"; break; case "P4-22": value = "CHART OF FUNDAMENTAL PARTICLES AND INTERACTIONS"; break; case "P4-31": value = "CLOUD CHAMBER - INDIVIDUAL VIEWING"; break; case "P4-32": value = "CLOUD CHAMBER - TV"; break; case "P4-33": value = "BUBBLE CHAMBER TRACKS - THREE DIMENSIONAL VIEWMASTER"; break; case "P4-41": value = "RUTHERFORD SCATTERING MODEL"; break; case "P4-42": value = "ALPHA PARTICLE SCATTERING ANALOG"; break; case "P4-51": value = "MILLIKAN OIL DROP MODEL"; break; case "P4-61": value = "CHAIN REACTION - DOMINOES MODEL"; break; case "P4-62": value = "CHAIN REACTION - MOUSE TRAP MODEL"; break; default: value = "None"; } return value; } function Demos( doc ) { this.flag = "Found"; this.getDemo = Demos_getDemo; }