Lecture Demonstrations Laboratory

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PHYS 1060 001: How Things Work

• 1. The tablecloth trick
  2. Hoop, pencil, and Coke-bottle trick
  3. Hovercraft (with working blower and charged battery)
  4. Razor scooter
  5. Skateboards

• 1. My big seesaw (if you still have it nearby, otherwise forget it)
  2. Mini-Me on a good bearing so that it spins freely
  3. Basketball
  4. Medium rubber mallet
  5. Long aluminum bar and tall fulcrum seesaw
  6. Short aluminum bar and short fulcrum seesaw
  7. 4 1-kg weights
  8. Moment-of-inertia rods
  9. Wood box and 10-kg weight (from friction demonstration)
  10. 2 spring scales (different ranges)
  11. 3 metal rods (rollers)
  12. C-Clamp for my firestarter
  13. Glass rectangular pan (for my dice)
  14. Can of nuts with the snake in it
  15. Batteries for my big capacitor
  16. Baseball
  17. Red Bowling ball
  Thanks, Lou

• 1. Wood box and 10-kg weight (from friction demonstration)
  2. 2 spring scales (different ranges)
  3. 3 metal rods (rollers)
  4. C-Clamp for my firestarter
  5. Glass rectangular pan (for my dice)
  6. Can of nuts with the snake in it
  7. Batteries for my big capacitor
  8. Baseball
  9. Red Bowling ball
  10. 2 Pasco Carts
  11. Swivel chair, bicycle wheel, dumbbells, and grinder to spin up bicycle wheel.
  and
  (A) my wood & bow firestarter
  (C) my big capacitor and screwdriver
  Thanks, Lou

• 1. Candle, matches, plates, and Whimshurst machine (distort candle flame)
  2. Van der Graff
  3. Sharp pin
  4. Conventional Flashlight (with bulb)
  5. LED Flashlight
  6. Car Battery, Knife Switch, and Big Bulb [Flashlight Circuit]
  

• 1. Candle, matches, plates, and Whimshurst machine (distort candle flame)
  2. Van de Graaff
  3. Sharp pin
  4. Conventional Flashlight (with bulb)
  5. LED Flashlight
  6. Car Battery, Knife Switch, and Big Bulb [Flashlight Circuit]
  7. Current flow demonstrator (with moving LED's) if it can tolerate the current in #6 (several Amperes?)
  - Lou
  
  Well, all I know is the Arbor Scientific Visual Electricity Demonstrator (VED) manual states voltage sources greater than 3V placed directly across the device will blow its 1.5A fuse (5mm). - Al
  
  We end up wiring the VED in series with the bulb (on neg side of battery) but with a shut (just a wire, low resistance) across the VED as well, to limit the current.

• 1. Conventional Flashlight (with bulb)
  2. LED Flashlight
  3. Car Battery, Knife Switch, and Big Bulb [Flashlight Circuit]
  4. Current flow demonstrator (with moving LED's) if it can tolerate the current in #6 (several Amperes?)
  5. Short circuit wire to insert across the bulb in #3 above, so that it gets red hot
  6. Ohms law demonstration
  7. A bar magnet on a swivel
  8. Several other bar magnets
  9. A pre-broken bar magnet (taped together)
  10. Two NdFeB magnets that I can let jump at each other violently
  11. Pieces of steel, aluminum, and copper (to show that only steel is ferromagnetic)
  12. The lattice of little compasses and a strong magnet to align them all into a single domain
  13. Two plastic sheet magnets, hopefully identical. They should alternately cling and repel as they slide across one another.
  Thanks, Lou

• 1. Car Battery, Knife Switch, and Big Bulb [Flashlight Circuit]
  2 Ohms law demonstration
  3. A bar magnet on a swivel
  4. Several other bar magnets
  5. A pre-broken bar magnet (taped together)
  6. Two NdFeB magnets that I can let jump at each other violently
  7. Pieces of steel, aluminum, and copper (to show that only steel is ferromagnetic)
  8. The lattice of little compasses and a strong magnet to align them all into a single domain
  9. Two plastic sheet magnets, hopefully identical. They should alternately cling and repel as they slide across one another.
  10. Big electromagnet (the one with horn-shaped pole pieces) and iron rod
  11. Hanging electromagnet (the one that can support me)
  12. A compass
  Thanks, Lou

• 1. A bar magnet on a swivel
  2. Several other bar magnets
  3. A pre-broken bar magnet (taped together)
  4. Two NdFeB magnets that I can let jump at each other violently
  5. Pieces of steel, aluminum, and copper (to show that only steel is ferromagnetic)
  6. The lattice of little compasses and a strong magnet to align them all into a single domain
  7. Two plastic sheet magnets, hopefully identical. They should alternately cling and repel as they slide across one another.
  8. Big electromagnet (the one with horn-shaped pole pieces) and iron rod
  9. Hanging electromagnet (the one that can support me)
  Thanks, Lou

• 1. Big electromagnet (the one with horn-shaped pole pieces) and iron rod
  2. Electric power distribution demo:
      3 big transformers (one to provide 12VAC, one step up, and one step down.
      2 power transmission lines (one thin pair, one thick pair)
      2 12V lightbulbs (one at the start of the transmission, one at the end)
      1 12V battery (so I can switch between 12VAC and 12VDC)
  3. Jumping ring demo (with aluminum rings, split ring, and LN2 to freeze aluminum ring)
  4. Lamp and coil (to create transformer with jumping ring electromagnet)
  5. Step-up and Step-down transformer demo (weld nails and jacobs ladder)
  6. Coil with LEDs and a magnet that can light those LEDs as I move it
  7. Tesla coil -- hopefully it is still operable... with fluorescent lamp

• 1. The radio transmitter demonstration: a tube-powered transmitter w/ audio source, an antenna to couple to and transmit a wave, a light-bulb on receiving antenna to show the current flowing, and a portable fm radio to listen to the transmission.

• 1. A camera and diffraction grating to view light spectra
  2. An incandescent bulb with a tall vertical filament (to view the spectrum)
  3. The discharge lamp system with helium, mercury, and neon tubes (also to view spectrum)
  4. The fluorescent fixture with a normal fluorescent tube and a tube without phosphor coating
  5. Various fluorescent fixtures (slow-start, modern incandescent replacements)
  6. Fluorescent phosphors and UV Lamp
  7. High-Pressure Sodium vapor lamp (outdoor lighting fixture, turned upside down)
  8. High-Pressure Mercury vapor lamp (another outdoor lighting fixture)
  9. The swinging plastic tube (standing waves)
  10. The long but higher-tension spring (for waves), attached to the edge of the big bench.

• 1. A camera and diffraction grating to view light spectra
  2. An incandescent bulb with a tall vertical filament (to view the spectrum)
  3. The discharge lamp system with helium, mercury, and neon tubes (also to view spectrum)
  4. The fluorescent fixture with a normal fluorescent tube and a tube without phosphor coating
  5. Various fluorescent fixtures (slow-start, modern incandescent replacements)
  6. Fluorescent phosphors and UV Lamp
  7. High-Pressure Sodium vapor lamp (outdoor lighting fixture, turned upside down)
  8. High-Pressure Mercury vapor lamp (another outdoor lighting fixture)
  9. Electroscope, with metal and insulating plug-ins, and a teflon rod & silk for transferring charge to the plug-in

• 1. The open HeNe laser (to show the cavity and the glowing gas).
  2. Some diffraction demonstrators - my good green laser pointer and a fine mesh, a diffraction grating, a CD should be good. I just want to cast the diffraction pattern on the front screen so that they can see the interference effects. 3. Optical rail with several lenses (may 10cm, 20cm, 30cm), a ground-glass screen, and a camera to view the real image cast on that screen.
  4. 3 light sources (easily identifiable -- different lamp shapes) at different distances from the lens (to show focusing issues)
  5. An adjustable aperture to put in front of the lens to show the change in the depth of focus
  6. A big fresnel lens to show images of the light fixtures overhead
  7. Elmo optics under document camera, with converging and diverging lenses

• 1. Optical rail with several lenses (may 10cm, 20cm, 30cm), a ground-glass screen, and a camera to view the real image cast on that screen.
  2. 3 light sources (easily identifiable -- different lamp shapes) at different distances from the lens (to show focusing issues)
  3. An adjustable aperture to put in front of the lens to show the change in the depth of focus
  4. A big fresnel lens to show images of the light fixtures overhead.
  5. Elmo optics under document camera, with lenses (converging and diverging)
  6. Pinhole collection and bright laser to demonstrate diffraction -- laser spot size gets bigger as hole gets smaller
  7. Total internal reflection demonstrator - light trying to leave water's surface at several different angles and eventually failing
  8. Light following a stream of water into a glass basin (flashlight with water container)
  9. The aquarium tank with about 8" of water in it -- more demonstrations of total internal reflection
  10. Fiber optics demo -- I think there is some rig to show audio being sent along a fiber

• 1. Pinhole collection and bright laser to demonstrate diffraction -- laser spot size gets bigger as hole gets smaller
  2. Total internal reflection demonstrator - light trying to leave water's surface at several different angles and eventually failing
  3. Light following a stream of water into a glass basin (flashlight with water container)
  4. The aquarium tank with about 8" (+/- 1 inch) of water in it -- more demonstrations of total internal reflection
  5. Fiber optics audio demonstration
  6. Ohms law demonstrator, with MOSFET on it, I will use my hand to convey charge to and from the gate of the MOSFET

• 1. Ohms law demonstrator, with MOSFET on it (I will use my hand to convey charge to and from the gate of the MOSFET)
  2. The audio amplifier set up, usually constructed on the big breadboard:
  with a simple audio source (I'll bring my cellphone?) and a speaker.

• 1. The mousetrap nuclear explosion
  2. Radioactive objects/sources and a detector for them