PHYS 270-DEMO USE (Total: 293 Demonstrations)
| Uses |
Demonstration |
| 5 |
A2-23 VECTOR PRODUCT |
| 2 |
D1-33 ROTATING MASS ON STRING |
| 3 |
G3-03 SHIVE WAVE MACHINE - REFLECTION OF PULSES |
| 2 |
G3-42 TORSIONAL WAVES |
| 2 |
G4-02 RIPPLE TANK |
| 2 |
H1-01 BELL IN VACUUM |
| 2 |
H2-21 AUDIBLE YOUNG'S EXPERIMENT - GROUP LISTENING |
| 1 |
H4-01 FOURIER SYNTHESIS |
| 1 |
H4-02 FOURIER ANALYSIS - WAVE SHAPE AND SPECTRUM |
| 1 |
H4-04 FOURIER ANALYSIS - DIGITAL OSCILLOSCOPE |
| 2 |
I2-01 CROOKES' RADIOMETER |
| 2 |
I2-04 WIEN'S LAW OF THERMAL RADIATION |
| 4 |
I7-21 SUPERCONDUCTIVITY - MAGNET LEVITATION |
| 2 |
J3-03 ELECTRIC FIELD LINES |
| 12 |
J5-01 MAGNETIC FIELD OF A BAR MAGNET |
| 1 |
J5-02 MAGNETIC FIELD - EME SET - BAR MAGNET |
| 5 |
J5-03 MAGNETIC FIELD OF A BAR MAGNET - 3D VERSION |
| 7 |
J5-04 MAGNETS |
| 8 |
J5-05 MAGNET MODEL - FIELD LINES |
| 6 |
J5-06 MAGNET - BROKEN BUT NO MONOPOLE |
| 2 |
J5-11 MAGNETIC FIELD - EME SET - STRAIGHT WIRE |
| 3 |
J5-13 MAGNETIC FIELD - EME SET - SOLENOIDS |
| 2 |
J5-14 MAGNETIC FIELD AROUND SINGLE AND PARALLEL WIRES |
| 9 |
J5-15 MAGNETIC FIELD OF RING OF CURRENT - MODEL |
| 24 |
J5-16 MAGNETIC FIELD OF WIRE, LOOP, SOLENOID |
| 4 |
J5-17 HELMHOLTZ COILS AND HALL PROBE |
| 4 |
J5-18 OERSTED EXPERIMENT |
| 4 |
J5-19 MAGNET FIELDS OF PARALLEL AND |
| 1 |
J5-31 QUADRUPOLE MAGNETIC |
| 4 |
J5-32 MAGNETIC LEVITATION - PERMANENT MAGNET AND |
| 2 |
J5-33 TORQUE ON A BAR MAGNET |
| 1 |
J5-41 FLUX MODEL - MAGNETOSTATIC |
| 3 |
J5-51 GAUSSMETER |
| 4 |
J6-01 ELECTROMAGNET WITH BANG |
| 3 |
J6-02 ELECTROMAGNET WITH JUNK |
| 4 |
J6-03 ELECTROMAGNET WITH JUNK - WITHOUT CORE |
| 4 |
J6-04 LOW POWER - HIGH FORCE ELECTROMAGNET |
| 1 |
J6-31 FORCE ON SOLENOID CORE |
| 2 |
J6-33 ELECTROMAGNETIC GUN |
| 4 |
J7-01 LODESTONE |
| 9 |
J7-11 PARAMAGNETISM AND DIAMAGNETISM |
| 8 |
J7-12 CURIE POINT OF IRON |
| 1 |
J7-13 CURIE POINT OF NICKEL |
| 2 |
J7-13 CURIE POINT OF NICKLE |
| 9 |
J7-21 HYSTERESIS |
| 7 |
J7-22 MAGNETIC DOMAINS WITH TV |
| 7 |
J7-23 MAGNETIC DOMAINS - MODEL |
| 7 |
J7-24 BARKHAUSEN EFFECT |
| 2 |
J7-31 VISIBLE HARD DRIVE |
| 17 |
K1-01 FORCE BETWEEN CURRENT-CARRYING WIRES |
| 6 |
K1-02 FORCE BETWEEN CURRENT-CARRYING WIRES - PROJECTION |
| 25 |
K1-03 FORCE ON CURRENT IN MAGNETIC FIELD |
| 12 |
K1-05 FORCE BETWEEN CURRENT-CARRYING COILS |
| 1 |
K1-06 CURRENT BALANCE |
| 2 |
K1-11 CATHODE-RAY TUBE - DEFLECTION BY CURRENT |
| 9 |
K1-12 CATHODE-RAY TUBE - DEFLECTION BY MAGNET |
| 4 |
K1-14 OSCILLOSCOPE CRT - DEFLECTION BY MAGNET |
| 16 |
K1-21 TORQUE ON CURRENT LOOP IN MAGNETIC FIELD |
| 10 |
K1-22 TORQUE ON 500-TURN COIL IN MAGNETIC FIELD |
| 7 |
K1-23 TORQUE ON CURRENT LOOP - MODEL |
| 2 |
K1-41 BARLOW'S DISC |
| 10 |
K1-51 HALL EFFECT |
| 7 |
K2-01 EARTH INDUCTOR |
| 7 |
K2-02 INDUCTION IN A SINGLE WIRE |
| 9 |
K2-03 FARADAY'S EXPERIMENT ON INDUCTION |
| 13 |
K2-04 FARADAY'S EXPERIMENT - EME SET - 20, 40, 80 TURN COILS |
| 10 |
K2-05 FARADAY'S EXPERIMENT - CONCENTRIC COILS |
| 11 |
K2-11 SELF INDUCTION |
| 3 |
K2-12 SELF-INDUCTION - DEMOUNTABLE TRANSFORMER |
| 2 |
K2-21 RHUMKORFF INDUCTION COIL |
| 5 |
K2-22 INDUCTION COIL WITH LIGHT BULB |
| 5 |
K2-23 INDUCTOR - ARCING SWITCH |
| 1 |
K2-24 MUTUAL INDUCTION |
| 7 |
K2-25 MUTUAL INDUCTION - DEMOUNTABLE TRANSFORMER |
| 5 |
K2-27 MUTUAL INDUCTION - M12 eq M21 MEASUREMENT |
| 4 |
K2-28 DEMOUNTABLE TRANSFORMER - 10KV ARC |
| 1 |
K2-29 COIL AND MAGNET WITH LED SENSOR |
| 1 |
K2-3 |
| 1 |
K2-31 |
| 15 |
K2-41 LENZ'S LAW - ROLLING RODS |
| 12 |
K2-42 LENZ'S LAW - MAGNET IN ALUMINUM TUBE |
| 15 |
K2-43 LENZ'S LAW - PERMANENT MAGNET AND COILS |
| 14 |
K2-44 EDDY CURRENT PENDULUM |
| 6 |
K2-45 EDDY CURRENTS - MAGNET AND SOFT DRINK CAN |
| 6 |
K2-46 MAGNET LEVITATION ABOVE SPINNING DISC |
| 13 |
K2-61 THOMSON'S COIL |
| 9 |
K2-62 CAN SMASHER - ELECTROMAGNETIC |
| 5 |
K2-63 DISPLACEMENT CURRENT MODEL |
| 5 |
K3-01 INDUCTION IN A TRANSFORMER |
| 3 |
K3-02 DEMOUNTABLE TRANSFORMER - SINGLE SPARKS |
| 2 |
K3-03 DEMOUNTABLE TRANSFORMER - V VS N - PROJ METER |
| 4 |
K3-04 DEMOUNTABLE TRANSFORMER - V VS N - OSCILLOSCOPE |
| 1 |
K3-05 DEMOUNTABLE TRANSFORMER - WELDER |
| 2 |
K3-06 DEMOUNTABLE TRANSFORMER - PRIMARY CURRENT VS |
| 10 |
K4-01 AC/DC GENERATOR |
| 2 |
K4-02 MAGNETOELECTRIC GENERATOR WITH LAMP |
| 1 |
K4-03 MAGNETOELECTRIC GENERATOR WITH BELL |
| 1 |
K4-04 MAGNETOELECTRIC GENERATOR WITH AC INDICATOR BULB |
| 1 |
K4-05 MAGNETOELECTRIC GENERATOR WITH METERS AND LOADS |
| 5 |
K4-07 BICYCLE GENERATOR |
| 3 |
K4-21 ST. LOUIS MOTOR |
| 3 |
K4-22 DC MOTOR |
| 1 |
K4-24 AC/DC MOTOR |
| 3 |
K4-41 MOTOR-GENERATOR PAIR |
| 1 |
K6-32 POTENTIOMETER |
| 13 |
K7-01 RL CIRCUIT - 50 MICROSECOND TIME CONSTANT |
| 8 |
K7-02 RL CIRCUIT - L/R TIME CONSTANT |
| 6 |
K7-03 INDUCTOR DELAYING A LAMP |
| 2 |
K7-04 RL CIRCUIT - FIELD COLLAPSE WITH FLUORESCENT BULB |
| 3 |
K7-11 RC CIRCUIT - RC TIME CONSTANT - |
| 1 |
K7-12 RC CIRCUIT - RC TIME CONSTANT - PROJECTION METERS |
| 2 |
K7-13 RC CIRCUIT - RC TIME CONSTANT - STORAGE SCOPE |
| 2 |
K7-15 CURRENT IN RC CIRCUIT |
| 16 |
K7-21 RLC CIRCUIT - 10 KHZ - RESONANCE |
| 9 |
K7-22 RLC CIRCUIT - 10 KHZ - DAMPED OSCILLATIONS |
| 1 |
K7-23 RLC CIRCUIT - 60 HZ |
| 1 |
K7-24 RLC CIRCUIT - 60 HZ WITH LIGHT BULB LOAD |
| 2 |
K7-26 RLC CIRCUIT - 0.3 HZ |
| 15 |
K7-27 RLC CIRCUIT - COMPLETE |
| 2 |
K7-30 RLC CIRCUIT - 10 KHZ - RINGING |
| 7 |
K7-31 RLC CIRCUIT - OVER/UNDER/CRITICAL DAMPING |
| 1 |
K7-44 RLC CIRCUIT - 10 KHZ - DIFFERENTIATION AND INTEGRATION |
| 3 |
K7-45 LOW AND HIGH PASS FILTERS |
| 10 |
K7-46 PHASOR DISC |
| 1 |
K7-61 TESLA COIL |
| 19 |
K8-01 ELECTROMAGNETIC WAVE - MODEL |
| 3 |
K8-02 INTRODUCTION TO LIGHT BEHAVIOR |
| 6 |
K8-03 LIGHT NANOSECOND |
| 11 |
K8-04 SPEED OF LIGHT |
| 5 |
K8-11 MICROWAVES - STANDING WAVES |
| 7 |
K8-12 RADIOWAVES - STANDING WAVES |
| 2 |
K8-13 RADIOWAVES - LECHER WIRE STANDING WAVES |
| 3 |
K8-14 RADIOWAVES - STANDING WAVES IN AN ANTENNA |
| 9 |
K8-41 HERZIAN DIPOLES |
| 6 |
K8-42 RADIOWAVES - ENERGY AND DIPOLE PATTERN |
| 1 |
K8-44 RADIOWAVES - COUPLING OF WAVES |
| 2 |
L1-11 INVERSE SQUARE LAW - LIGHT BULB AND |
| 1 |
L1-12 INVERSE SQUARE LAW - OVERHEAD PROJECTOR AND TWO-METER STICK |
| 7 |
L2-01 OPTICAL BOARD - PLANE MIRROR |
| 1 |
L2-02 OPTICAL BOARD - RAY DIAGRAM - PLANE MIRROR |
| 4 |
L2-03 MICROWAVES - REFLECTION |
| 1 |
L2-04 VIRTUAL IMAGE DETECTOR - PLANE MIRROR |
| 5 |
L2-05 PERVERTED IMAGE - AXES IN MIRROR |
| 6 |
L2-06 MAGIC TRICK - DISAPPEARING RABBIT |
| 4 |
L2-07 PERVERTED IMAGE - LIGHT |
| 1 |
L2-21 OPTICAL BOARD - HALF-SILVERED MIRROR |
| 4 |
L2-22 INFINITY MIRROR |
| 2 |
L2-23 MIRROR BOX |
| 1 |
L2-41 OPTICAL BOARD - CORNER REFLECTOR |
| 2 |
L2-42 CORNER REFLECTOR - MIRROR TILES |
| 1 |
L2-44 CORNER REFLECTOR - HAND HELD |
| 5 |
L3-01 OPTICAL BOARD - CONVEX SPHERICAL MIRROR |
| 1 |
L3-03 LARGE CONVEX MIRROR |
| 5 |
L3-11 OPTICAL BOARD - CONCAVE SPHERICAL MIRROR |
| 2 |
L3-13 OPTICAL BOARD - SPHERICAL ABERRATION IN CONCAVE MIRROR |
| 1 |
L3-14 LARGE CONCAVE MIRROR |
| 3 |
L3-15 ROTATING LIQUID MIRROR |
| 1 |
L3-16 FOCUSING OF HEAT WAVES BY MIRRORS |
| 1 |
L3-18 FOCUSING OF HEAT WAVES - OVERHEAD PROJECTOR |
| 2 |
L3-19 PENNY AND PARABOLIC MIRRORS |
| 1 |
L3-20 APPARENT REFLECTION FROM REAL IMAGE |
| 4 |
L3-21 LIGHT BULB AND PARABOLIC MIRROR |
| 1 |
L3-23 IMAGE ON SCREEN USING CONCAVE MIRROR |
| 1 |
L3-24 OPTICAL BOARD - SPHERICAL AND PARABOLIC |
| 1 |
L3-25 IMAGE LOCATION WITH TV CAMERA - MIRROR |
| 5 |
L3-31 GIANT MIRROR - CONCAVE AND CONVEX |
| 9 |
L4-01 OPTICAL BOARD - RECTANGULAR SLAB |
| 7 |
L4-02 REFRACTION - BEER MUG IN WATER |
| 6 |
L4-03 REFRACTION - ROD IN WATER |
| 5 |
L4-04 REFRACTION - CAN IN WATER TANK |
| 2 |
L4-05 REFRACTION IN FISH TANK - PORTABLE |
| 2 |
L4-06 REFRACTION IN CLOUDY WATER |
| 3 |
L4-21 SNELL'S LAW - IMAGE DISTORTION |
| 2 |
L4-23 BENDING OF LASER BEAM IN SUGAR SOLUTION |
| 7 |
L4-31 DISAPPEARANCE OF GLASS IN LIQUID |
| 1 |
L4-41 MICROWAVES - REFRACTION BY PRISM |
| 9 |
L5-01 OPTICAL BOARD - TOTAL INTERNAL REFLECTION |
| 7 |
L5-02 TOTAL INTERNAL REFLECTION IN LONG TANK |
| 3 |
L5-11 LASER WATERFALL |
| 3 |
L5-12 PLEXIGLASS SPIRAL |
| 2 |
L5-13 PLEXIGLASS SPIRAL WITH LASER |
| 4 |
L5-14 LASER AND PLEXIGLASS TUBE |
| 1 |
L5-21 FIBER OPTICS ARRAY |
| 6 |
L5-24 FIBER OPTICS - COMMUNICATION LINE |
| 11 |
L6-01 OPTICAL BOARD - CONVERGING SPHERICAL LENS |
| 2 |
L6-02 OPTICAL BOARD - CIRCULAR SLAB |
| 1 |
L6-03 OPTICAL BOARD - HYPERBOLIC LENS |
| 3 |
L6-04 OPTICAL BOARD - RAY DIAGRAM - REAL IMAGE POS LENS |
| 3 |
L6-05 OPTICAL BOARD - RAY DIAGRAM - VIRTUAL IMAGE |
| 1 |
L6-06 MULTIPLE PINHOLES AND LENS RECOMBINATION |
| 2 |
L6-08 REAL IMAGE OF CONVERGING LENS - LIGHT BULB |
| 3 |
L6-09 REAL IMAGE OF CONVERGING LENS |
| 2 |
L6-12 MAGNIFYING LENS IN WATER |
| 1 |
L6-13 OPTICAL BOARD - PARALLEL RAY FOCUS |
| 1 |
L6-14 IMAGE OF CONVEX LENS - WITH AND WITHOUT BAFFLE |
| 6 |
L6-21 OPTICAL BOARD - DIVERGING SPHERICAL LENS |
| 2 |
L6-22 OPTICAL BOARD - RAY DIAGRAM - VIRTUAL IMAGE NEG LENS |
| 1 |
L6-31 STRING MODEL - SPHERICAL ABERRATION |
| 1 |
L6-32 OPTICAL BOARD - SPHERICAL ABERRATION IN LENS |
| 2 |
L6-34 OPTICAL BOARD - CHROMATIC ABERRATION IN LENS |
| 1 |
L6-51 OPTICAL BOARD - FRESNEL LENS |
| 1 |
L6-53 FRESNEL LENS MAGNIFIER |
| 1 |
L6-54 OPTICALLY PROGRAMMED TRAFFIC SIGNAL - MODEL |
| 1 |
L7-04 DEPTH OF FIELD AND FIELD OF VIEW |
| 2 |
L7-11 OPTICAL BOARD - ASTRONOMICAL TELESCOPE |
| 1 |
L7-21 MAGNIFYING GLASS - TV |
| 1 |
L7-22 MICROSCOPE - TV |
| 1 |
L7-23 ASTRONOMICAL TELESCOPE - TV |
| 10 |
M1-01 LASER DIFFRACTION - FIXED SINGLE SLIT |
| 13 |
M1-02 LASER DIFFRACTION - VARIABLE SINGLE SLIT |
| 3 |
M1-03 SINGLE SLIT DIFFRACTION - FRESNEL & FRAUNHOFFER |
| 3 |
M1-04 LASER DIFFRACTION - WIRES |
| 3 |
M1-05 FINGERS AND SODIUM SOURCE - VARIABLE SINGLE SLIT |
| 16 |
M1-11 LASER DIFFRACTION - FIXED DOUBLE SLITS |
| 2 |
M1-12 INTERFERENCE - TRANSPARENCIES |
| 5 |
M1-13 INTERFERENCE - KLINGER TRANSPARENT SLIDES |
| 4 |
M1-14 MICROWAVES - INTERFERENCE OF TWO POINT SOURCES |
| 5 |
M1-15 MICROWAVES - YOUNG'S DOUBLE SLIT INTERFERENCE |
| 3 |
M1-16 INTERFERENCE OF LIGHT - SOUND WAVE MODEL |
| 9 |
M1-21 LASER DIFFRACTION - MULTIPLE SLITS |
| 16 |
M1-22 LASER DIFFRACTION - GRATINGS |
| 1 |
M1-33 LASER DIFFRACTION - PHONOGRAPH RECORD |
| 3 |
M1-34 LASER DIFFRACTION - COMPACT DISC |
| 2 |
M1-41 PEACOCK FEATHER |
| 2 |
M1-42 IRIDESCENT GREEN JUNE BEETLE |
| 12 |
M2-01 LASER DIFFRACTION - PINHOLES |
| 5 |
M2-02 LASER DIFFRACTION - OPAQUE DISCS |
| 3 |
M2-03 LASER DIFFRACTION - POISSON'S BRIGHT SPOT |
| 2 |
M2-04 LASER DIFFRACTION - HALO |
| 5 |
M3-01 MICHELSON INTERFEROMETER - LASER LIGHT |
| 2 |
M3-02 MICHELSON INTERFEROMETER - WHITE LIGHT |
| 6 |
M4-01 INTERFERENCE IN THIN MICA SHEET - PROJECTION |
| 18 |
M4-02 NEWTON'S RINGS - PROJECTION |
| 4 |
M4-04 INTERFERENCE BETWEEN GLASS PLATES |
| 10 |
M4-11 ANTI-REFLECTIVE COATING |
| 9 |
M4-21 SOAP FILM INTERFERENCE - SIMPLE LARGE VERSION |
| 6 |
M4-25 INTERFERENCE IN LARGE SOAP FILM - SODIUM AND WHITE |
| 1 |
M5-02 LASER DIFFRACTION - MESHES |
| 2 |
M5-03 LASER DIFFRACTION - OPTICAL CRYSTALS |
| 2 |
M5-12 LASER DIFFRACTION - RAZOR EDGE |
| 1 |
M5-21 LASER INTERFERENCE - FRESNEL'S MIRROR |
| 2 |
M5-22 LASER INTERFERENCE - LLOYD'S MIRROR |
| 2 |
M6-11 HOLOGRAM - MULTIPLEX - BASEBALL |
| 4 |
M7-01 MICROWAVES - POLARIZATION |
| 11 |
M7-03 POLAROIDS AND GOOSENECK LAMP |
| 7 |
M7-04 MALUS' LAW |
| 1 |
M7-06 ROPE WAVE GENERATOR - POLARIZATION |
| 7 |
M7-07 CROSSED POLAROIDS - E FIELD COMPONENTS |
| 2 |
M7-11 OPTICAL BOARD - BREWSTER'S ANGLE |
| 2 |
M7-12 BREWSTER'S ANGLE - POLAROID AND TWO REFLECTORS |
| 5 |
M7-13 BREWSTER'S ANGLE - SEMICIRCULAR LUCITE SLAB |
| 1 |
M7-16 REFLECTION OF POLARIZED LIGHT FROM CONDUCTOR & DIELECTRIC |
| 3 |
M7-17 REFLECTION OF LIGHT FROM DIELECTRIC AND CONDUCTOR |
| 1 |
M7-31 TYNDALL'S EXPERIMENT - COLLOIDAL SUNSET |
| 8 |
M8-01 POLAROIDS AND KARO SYRUP |
| 3 |
M8-03 OPTICAL ACTIVITY IN KARO SYRUP CYLINDERS |
| 3 |
M8-21 CALCITE BIREFRINGENCE |
| 2 |
N1-01 PRISMATIC SPECTRUM OF WHITE LIGHT - CARBON ARC |
| 1 |
N1-01 PRISMATIC SPECTRUM OF WHITE LIGHT - POINT SOURCE |
| 1 |
N1-11 DIFFRACTION SPECTRUM OF WHITE LIGHT - POINT SOURCE |
| 2 |
N1-22 OPTICAL BOARD - PRISMS - SEPARATE AND RECOMBINE |
| 2 |
N1-44 RAINBOW - OPTICAL BOARD |
| 2 |
N2-01 DIFFRACTION SPECTRUM OF MERCURY |
| 4 |
N2-02 DIFFRACTION SPECTRA - THREE SOURCES - EXPENDABLE GRATINGS |
| 2 |
N2-03 DIFFRACTION SPECTRUM OF SODIUM - EXPENDABLE GRATINGS |
| 1 |
N2-21 PRISMATIC SPECTRUM OF MERCURY - SUPERPRESSURE LAMP |
| 2 |
P1-02 LOCAL INERTIAL FRAME OF REFERENCE |
| 2 |
P1-11 CURVATURE OF SPACE |
| 1 |
P1-12 SPACETIME DIAGRAM IN 3D - EARTH ORBITING SUN |
| 3 |
P1-21 EINSTEIN'S RELATIVITY EXPERIMENT |
| 11 |
P2-01 PHOTOELECTRIC EFFECT AND PLANCK'S CONSTANT |
| 10 |
P2-02 PHOTOELECTRIC EFFECT IN ZINC - ARC LAMP |
| 2 |
P2-03 PHOTOELECTRIC EFFECT IN ZINC - UV LAMP |
| 1 |
P2-04 PHOTOELECTRIC PROPELLER |
| 1 |
P2-05 PHOTO-RESISTOR RELAY |
| 2 |
P2-11 INTERFERENCE OF PHOTONS |
| 6 |
P2-12 X-RAY DIFFRACTION MODEL |
| 8 |
P2-13 ELECTRON DIFFRACTION |
| 2 |
P2-14 ELECTRON DIFFRACTION MODEL |
| 5 |
P2-15 WAVE PACKETS - OSCILLATORS |
| 6 |
P2-21 BLACK BODY MODEL |
| 9 |
P2-22 BICHSEL BOXES - BLACK BODY RADIATION |
| 2 |
P2-42 PARTICLE IN A BOX - 1D, CLASSICAL - Q.M. INTRO |
| 2 |
P2-43 CLASSICAL HARMONIC OSCILLATOR - Q.M. INTRO |
| 1 |
P3-02 ATOMIC ELECTRON ORBITAL MODELS |
| 1 |
P3-23 CATHODE-RAY TUBE - FLUORESCENCE EFFECT |
| 2 |
P3-31 X-RAY TUBE |
| 1 |
P3-41 FRANCK-HERTZ EXPERIMENT |
| 5 |
P3-51 BALMER SERIES |
| 1 |
P3-52 RESONANCE RADIATION |
| 1 |
P3-61 FLUORESCENT LIQUIDS |
| 1 |
P4-61 CHAIN REACTION - DOMINOES MODEL |
| 3 |
P4-62 CHAIN REACTION - MOUSE TRAP MODEL |