H3-02 STANDING SOUND WAVES - REFLECTION
Nice illustration of standing sound waves and detection.
H3-23 RESONANCE TUBE - OSCILLATOR, PLUNGER AND
MICROPHONE
Nice example of standing sound waves in closed tube.
H3-24 OPEN AND CLOSED PIPES
Show how closure of one end effects fundamental frequency.
H4-01 FOURIER SYNTHESIS
Synthesizes waves such as triangle, square, sawtooth, and
pulse train using up to 12 harmonics, while you listen. Also can be used
with two equal harmonics with variable phase to show interference.
G4-22 CHLADNI FIGURES - OSCILLATOR DRIVEN
Neat two-dimensional standing waves on aluminum plates.
H6-04 HELIUM VOICE
H6-05 SULFUR HEXAFLUORIDE VOICE
Breath these gases to make your voice go up or down.
Chapter 15: Temperature
- SLIDE: Compares four temperature scales.
- I1-13 THERMAL EXPANSION - BIMETAL STRIP
- Bends when heated like thermostat sensor.
- I4-31 ICE BOMB
- Freezing water cracks metal container with loud bang.
- I1-11 THERMAL EXPANSION - BALL AND HOLE
- Ask students if hole in metal sheet changes size when sheet is heated.
- I3-52 CONSTANT VOLUME GAS THERMOMETER -
ABSOLUTE ZERO
- Determine temperature of absolute zero.
- I3-41 BOYLE'S LAW - PROJECTION
- I3-51 CHARLES' LAW - PROJECTION
- Same apparatus used to study ideal gas.
- I4-17 BALLOON ON LIQUID NITROGEN
- Balloon shrinks due to temperature and phase change.
- I6-01 GAS PRESSURE - MODEL
- Greater molecular speeds create greater pressure.
- I6-11 BROWNIAN MOTION WITH TV
- Smoke particles can be viewed with microscope/TV setup.
- LOOPS: THE MAXWELL-BOLTZMANN DISTRIBUTION OF VELOCITIES
- MAXWELLIAN SPEED DISTRIBUTION
- Develop Maxwell/Boltzmann statistics using air table and
animation. Clear and nice, difficult to do in class
- I4-01 PVT PHASE DIAGRAMS FOR CO2 AND H2O
- Large 3D surfaces for class use.
- I6-03 EQUIPARTITION OF ENERGY
-
Comparison of how particles of various mass escape from gravitational field.
- I6-21 GAS DIFFUSION - MODEL
- Ping-pong ball gas diffuses through hole.
Chapter 16: Heat and the First Law of Thermodynamics
- I5-01 MECHANICAL EQUIVALENT OF HEAT - SHOT
BAG
- Measure temp rise of shot after beating it on floor.
- I5-51 SPECIFIC HEAT - ALUMINUM AND COPPER
- Greater specific heat raises temp of water bath more.
- I2-21 THERMAL CONDUCTIVITY OF METALS
- Determine hierarchy of heat conduction in six metals.
- I5-12 ADIABATIC EXPANSION OF AIR - FOG IN BOTTLE
- I5-13 ADIABATIC EXPANSION OF AIR - COMPUTER
GRAPH OF TEMP
- Compress air in bottle; when stopper blows bottle fills
with fog and its temperature drops.
- I5-15 ADIABATIC EXPANSION OF CARBON DIOXIDE
- Create large fog or small smear of dry ice using
carbon dioxide fire extinguisher.
- SLIDE: HYDROGEN BOMB MUSHROOM CLOUD DUE TO ADIABATIC EXPANSION
- Very interesting explanation.
Chapter 17: The Availability of Energy
- I5-41 ENDOTHERMIC REACTION - ENTROPY
- Nice demo to see physical meaning of entropy.
- FILM: GASOLINE ENGINE - OTTO CYCLE (6 min)
- Good graphics and clear explanation.
Chapter 18: The Electric Field I: Discrete Charge
Distributions
J1-01 TRIBOELECTRICITY - CHARGING BY
FRICTION
Charging by "friction" (contact) using tunneling.
J1-21 ELECTROSTATIC ATTRAC AND REPULS -
CHARGED CYLINDERS
Large "pith balls" charged the same repel each other.
J1-12 INDUCTION - ELECTROSCOPE
J1-11 ELECTROPHORUS
J1-13 ELECTROSTATIC INDUCTION
J1-41 CONDUCTORS AND INSULATORS
Classical electrostatics introductory demonstrations.
J4-11 POLAR AND NONPOLAR LIQUIDS
Polar liquids (H2O) are deflected by electric fields but
non-polar liquids (CCl) are not.
J4-12 ELECTROSTATIC FORCE - MOVING LUMBER
Polarization of charge of water molecules in a wooden
2X4 allows 2X4 to be moved by nearby charged rod.
Chapter 19: The Electric Field II: Continuous Charge
Distributions
- J3-01 EXISTENCE OF ELECTRIC FIELDS
- J3-03 ELECTRIC FIELD LINES
- Show electric field lines for various conductor geometries.
- J1-24 ELECTROSTATIC HAIR RAISING
- Classic demonstration.
- J2-15 ELECTROSTATIC SMOKE PRECIPITATOR
- J3-02 ELECTRIC FIELD OF RING OF CHARGE -
MODEL
- Standard problem geometry.
Chapter 20: Electric Potential
- J3-24 HOLLOW CONDUCTING SPHERE
- J3-06 ELLIPSOIDAL CONDUCTOR
- J3-22 FARADAY CAGE - ELECTROSCOPE
- Classical electrostatics demonstrations.
- J2-03 VAN DE GRAAFF GENERATOR WITH
GROUND SPHERE
- Enhance text material on how generator works.
- J2-14 LIGHTNING ROD SIMULATOR
- Shows how the lightning rod works by discharging nearby
clouds before the lightning stroke can occur.
Chapter 21: Capacitance, Dielectrics and Electrostatic
Energy
- J4-01 PARALLEL PLATE CAPACITOR
- J4-22 PARALLEL PLATE CAPACITOR WITH DIELECTRIC
- Show Voltage vs. Separation, then discharge with match.
- J4-23 POLARIZATION OF DIELECTRIC -
DISSECTIBLE LEYDEN
JAR
- Illustrates that the energy stored in a capacitor
resides as polarization within the dielectric.
- J4-42 CAPACITORS IN SERIES AND PARALLEL
Chapter 22: Electric Current
- K5-31 OHM'S LAW
- K5-43 NON-OHMIC DEVICE - V VS. I
Chapter 23: Direct-Current Circuits
- K6-51 KIRCHOFF'S LAWS
- Circuit with two loops (Transparency available.).
- K6-23 HOT DOG COOKER - 110VAC
- Cook hot dog, calculate energy consumed, and
compare with heat energy in hot dog.
- K6-33 WHEATSTONE BRIDGE
- K7-11 RC CIRCUIT - RC TIME CONSTANT - OSCILLOSCOPE
- Trace V vs. t for capacitor charging and discharging
with approximately 1 second time constant.
- K7-43 RELAXATION OSCILLATOR - NEON LAMP
- Capacitor charges through resistor such that when it
reaches 90 V it discharges through neon bulb.
- K7-41 RC CIRCUIT - DIFFERENTIATION AND INTEGRATION
- Illustrates differentiation and integration circuits
for sine, square, sawtooth and pulse train.
Chapter 24: The Magnetic Field
- J5-01 MAGNETIC FIELD OF A BAR MAGNET
- J5-16 MAGNETIC FIELD AROUND WIRE, LOOP, SOLENOID
- J5-03 MAGNETIC FIELD OF A BAR MAGNET - 3D
VERSION
- Use iron filings to display magnetic fields.
- K1-12 CATHODE-RAY TUBE - DEFLECTION BY MAGNET
- K1-14 OSCILLOSCOPE CRT - DEFLECTION BY MAGNET
- K1-15 OSCILLOSCOPE CRT - DEFLECTION BY ELECTRIC
FIELD
- Classical demonstrations.
- K1-21 TORQUE ON CURRENT LOOP IN MAGNETIC FIELD
Chapter 25: Ampere's Law
- J5-15 MAGNETIC FIELD OF RING OF CURRENT -
MODEL
- 3D model aids visualization.
- K1-01 FORCE BETWEEN CURRENT-CARRYING WIRES
- K1-03 FORCE ON CURRENT IN MAGNETIC
FIELD
Lecture-Demonstration Home Page
For comments or constructive criticism of this
documentplease e-mail Dr. Richard Berg, reberg@physics.umd.edu,
or send comments by phone or to the mailing address on the
home page.