Lecture Demonstrations Laboratory

Demo Request History

Getting info for CourseID: 526

PHYS 241E: General Physics II

•  video  - Temperature Effects on the Resistance of Copper Wire
  (with ammeter to measure current. ALSO: circuit to measure resistance of a light bulb when cool, and again when hot--prefer to do this directly, instead of deducing from I and V. )
• Ohm's Law
  (with camera? ALSO: blow a fuse. ALSO: simple circuit of battery in series with a resistor, and multimeter to measure V, I, R on Elmo. )

•  video  - Circuit Analysis
  (want to measure V and I, and deduce wattage of bulb. ALSO: build 2 resistance networks, as shown on drawing in basket. ALSO: broken-open 3-way bulb to show, burn out a broken-open regular bulb, multimeter to measure resistance. )

•  video  - Circuit Analysis
  (ALSO:innards of 3-way bulb to show, 3 different wattage bulbs (maybe 60 W, 100 W, 300 W), and multimeter to measure resistance )

•  video  - Circuit Analysis
  (the parallel/series plywood board only )

•  video  - Kinds of Charge and Charging
•  video  - Attraction and Repulsion Between Charged Objects
•  video  - Electric Wind

•  video  - Van de Graaff Generator
  (ALSO: Newton's Folly. ALSO: Can we do Lou's Electrostatic copier demo, in which a sheet of plastic is charged, then rub finger across to remove some charge, then sprinkle with felt dust? )

•  video  - Electric Fields
  (ALSO: computer software that shows electric field lines of accelerating charge )
•  video  - Lightning Rod
• Ionic Drive

•  video  - Electrostatic Bell

•  video  - Lightning Rod
  (ALSO: block radio reception by surrounding it with conductor (want to also surround with non-conductor as a control) )

• Discharge Tubes
  (I would like to show the mercury-filled electron tube which the labs use, because the beam can be seen. Need a magnet with this, and a camera to show close-ups. ALSO: close-up of color TV, showing the three colors )

•  video  - Parallel Plate Capacitor
  (would like to charge plates with a battery, then disconnect, then monitor voltage with a multimeter as I change the spacing )
•  video  - RC Circuit w/ Function Generator
• RC Time Constant (DECAY)

•  video  - Magnetic Fields w/ Matrix of Iron Rods
  (ALSO: the small demo with 2 repelling magnets on a wood dowel. )
•  video  - Magnetic Fields Associated with Current Carrying Wires 2
  (ALSO: U-shaped wire loop that is suspended freely, and can be made to swing one way or the other by magnet at bottom )

•  video  - Magnetic Deflection of an Electron Beam
  (ALSO: de-magnetize color TV. ALSO: current-carrying wire in B-field. )

•  video  - Galvanometer Movement
  (ALSO: John's dixie-cup speakers connected to source of music, big speaker to bounce marbles---with camera, and speaker that comes apart )
• Electric Motor
  (want the really simple motor with the D-cell, and also one of the more complicated ones. )

•  video  - Forces Between Current Carrying Wires
  (ALSO: Jacob's ladder. ALSO: Could we meaure quantitatively B-field near straight wire with a Hall probe? )

• Flash Bulb Coil
•  video  - LED Coil
  (ALSO: the three different-sized solenoids, push magnet into them and monitor current with ammeter )

• Electric Motor
  (Would like to show this as an AC generator, if possible--see galvanometer reading actually swing back and forth. ALSO: suspend metal ring, and pull magnet through it--ring is attracted. )

•  video  - Jumping Ring
  (Most of this is already on the cart, except I'd like to get the boiling ring, and some LN2 to cool a ring. )

• Meissner Effect (diamagnetic levitation)
•  video  - Eddy Current Pendulum
•  video  - Lenz's Law and Eddy Currents
•  video  - Jumping Ring
•  video  - Transformers
  (Mainly want to show how current and voltage output varies as primary/secondary ratio is changed, but any cool accessories would be nice too. ALSO: do you have a disassembled calculator-type transformer for show and tell? )

•  video  - LR Circuit w/ Function Generator
  (ALSO: a few inductors for show and tell. ALSO: the inductor-based circuit breaker that Rick brought up. )

•  video  - Series LCR Circuit, Resonance
  (ALSO: Can I show a simple RC low pass filter and an RL high pass filter? (AC in series with RC or RL, and look at voltage across the R) )

• Razor Edge Diffraction
•  video  - Polarization of Light
  (just the crossed polarizers and photoelastic pieces )
• Image Retention

• Einstein Revealed

• Einstein Revealed
  (ALSO "Einstein Express" video. ALSO: globe of the Earth for show and tell )

•  video  - Standing Waves
•  video  - Photoelectric Effect in Zinc
•  video  - Emission Spectra