Science A-29 demos for:

Lecture 2 Friday, 02-04-2000
rectilinear propagation
Small carbon arc w/o lens for shadow projection
Video pinhole camera (screen, lights).
law of reflection
Optics disk w/mirror.
Hero's shortest path.

Lecture 3 Monday, 02-07-2000
reflection
Optics disk w/mirror.
Hero's shortest path.
refraction
Whiteboard optics with plastic rectangle.
Milky fish tank and laser.
Optics disk w/ semi-circular plastic.
Lens refraction in air and water.
Fiber optics with laser, spiral plastic rod.
Picture of a theatrical spotlight shining on a fishtank.

Lecture 4 Wednesday, 02-09-2000
refraction
Milky fishtank and laser.
Optics disk with semi-circular plastic.
Sugar tank for bouncing laser beam, if it is ready, otherwise Friday.
TIR
Fiber optics & spiral plastic rod.
Wine glass trapping laser light. Orbiting beam, use a flared goblet and get a diverging band of green laser light.
TIR plastic flowers.

Lecture 5 Friday, 02-11-2000
refraction and TIR
Sugar tank for bouncing laser beam
Bucket of light (just the bucket with flashlight & water)
Refraction by air
Schlieren optics
Descartes (monochromatic & regular) rainbow with flask.

Lecture 6 Monday, 02-14-2000
the rainbow
speed of light

Lecture 7 Wednesday, 02-16-2000
speed of light (cont'd)
Fermat's least time principle
Wheel and axle wavefront.
color
Large carbon arc spectrum with second prism.

Lecture 8 Friday, 02-18-2000
color
Large carbon arc spectrum with neckties & napkins in a blind so they aren't seen prematurely or in the back light of the screen. It helps to have all other lights completely off.
IR end of the spectrum
1500 Watt light bulb on variac.
IR light source & radiometer detector
IR slide projector with liquid crystal thermometer screen.

Lecture 9 Wednesday, 02-23-2000
UV end of the spectrum
Carbon arc with quartz optics and fluorescent screen for detection.
color mixing and perception
Color mixing on OHP
RGB color perception. Sony monitor on moving rails, Ikegami camera looking through adjustable 50 mm Nikon lens, E-shop color bar generator.

Lecture 10 Friday, 02-25-2000
polarization phenomena
Large calcite crystal on OHP, 2nd smaller (analyzer) crystal, black mask.
Triple polarizer set-up (Roy brings) with light box.
Polarization by reflection: Brewster's angle.

Lecture 11 Monday, 02-28-2000
polarization phenomena
Triple polarizer set-up with light box.
Polarization by scattering (fish tank).
OHP polarimetry. Urethane block, plastic stress patterns in disk and c-clamped pieces, acetate & cellophane, audio cassette tape box.

Lecture 12 Wednesday, 03-01-2000
polarization phenomena
OHP polarimetry. Urethane block, plastic stress patterns in disk and c-clamped pieces, acetate & cellophane, audio cassette tape box.
interference phenomena
Newton's rings in white and Hg green light.
Oil or turpentine film on water.
Soap film.

Lecture 13 Friday, 03-03-2000
interference phenomena, cont'd.
Newton's rings in white and Hg green light.
uniform circular motion & oscillations
Dippy duck repetitive motion.
Tennis ball on string uniform circular motion.
Large weight on spring SHM.

Lecture 14 Monday, 03-06-2000
oscillations
OHP circular & SHM
Single glider SHM on airtrack.
Slug oscillator.
Air track coupled oscillators.
Coupled pendula normal modes.

Lecture 15 Wednesday, 03-08-2000
normal modes of oscillation
Coupled pendula normal modes.
Air track normal modes with 2 and 3 coupled gliders.
Shadow projection of two simultaneous circular motions
Wavemaker software
intro to waves
Long rope on top of lecture bench.

Lecture 16 Friday, 03-10-2000
normal modes of oscillation
Wavemaker software
intro to waves
Shive wave machine (option of damped, fixed, & free ends.)
Bifilar suspended slinky for longitudinal waves.
Long spring for standing waves.

Lecture 17 Monday, 03-13-2000
sound
Long spring for standing waves.
Large amplitude oscillations of speaker cone and frequency response of the ear.
Beats from two speakers with two function generators.
Beats from two tuning forks (mike, preamp, scope, etc.)

Lecture 18 Wednesday, 03-15-2000
Beats from two speakers with two function generators.
Beats from two tuning forks (mike, preamp, scope, etc.)

Lecture 19 Friday, 03-17-2000
standing waves in one-dimensional systems (cont'd)
Whirl-a-tune toy.
Glass pipes with Bunsen burners.
Fountain wave tube.

Exam Monday, 03-20-2000

Lecture 20 Wednesday, 03-22-2000
standing waves in one-dimensional systems (cont'd)
Aluminum rod standing waves.
He and SF6.
Fourier synthesis & analysis
Fourier synthesis of square & sawtooth wave forms with Pasco synthesizer and digital scope.
Fourier analysis of musical instruments.

Lecture 21 Friday, 03-24-2000
Manual Chladni plates.
Electric Chladni plates.
Tacoma Narrows bridge video.
Doppler whirler.
Doppler ball.
Doppler rotating speakers.
Standing waves on a soap film.

Lecture 22 Monday, 04-03-2000
more resonance
Shattering wineglass.
Huygens and waves
Ripple tank: plane wave generator for

  • reflection
  • standing waves
  • refraction
  • total internal reflection
  • diffraction around barrier & single slit
  • double source interference

    • Lecture 23 Wednesday, 04-05-2000
    wave interference
    Ripple tank: plane wave generator for

  • refraction of waves (prism and lens)
  • waves around obstacles and barriers vs wavelength
    • OHP double source Moire interference pattern.
    Double slit with HeNe from rear of hall.

    Lecture 24 Friday, 04-07-2000
    wave interference
    Ripple tank: plane wave generator for

  • refraction of waves (prism and lens)
  • waves around obstacles and barriers vs wavelength
    • OHP double source Moire interference pattern.
    Double slit with HeNe from rear of hall.

    Lecture 25 Monday, 04-10-2000
    wave interference
    Ripple tank: plane wave generator for

  • double source interference
  • double slit interference
  • single slit interference
    • OHP double source Moire interference pattern.
    Double slit with HeNe from rear of hall.
    Double speaker sound interference.
    "Poor man's" double slit (with tower of spectra)

    Lecture 26 Wednesday, 04-12-2000
    double slit interference
    Double speaker sound interference.
    "Poor man's" double slit (with tower of spectra)
    multiple slit interference & diffraction gratings
    HeNe from rear of hall set up for:

  • multiple slits
    • Diffraction gratings for class & tower of spectra plus small Hg lamp.

    Lecture 27 Friday, 04-14-2000
    multiple slit interference & diffraction gratings
    HeNe from rear of hall set up for multiple slits
    Diffraction gratings for class & tower of spectra plus small Hg lamp.
    Slide projector for Roy's hand held diffraction grating.
    single slit and aperture diffraction
    HeNe from rear of hall set up for:

  • single adjustable slit
  • double slit with razor blade to cover one slit
  • Airy's disk

    • Lecture 28 Monday, 04-17-2000
    single slit and aperture diffraction
    HeNe from rear of hall set up for:

  • single adjustable slit
  • double slit with razor blade to cover one slit
  • Airy's disk
  • Poisson's spot
    • resolution
    Resolution of two HeNe lasers through adjustable slit.
    Resolution of micron size latex spheres under microscope.

    Lecture 29 Wednesday, 04-19-2000
    electrostatics & magnetostatics
    Triboelectrics:

  • teflon/fur & glass/silk combos
  • styrofoam puffs
  • large electroscope
    • Bar magnet and suspended lodestone.
    electricity & magnetism
    Wimshurst machine.
    Van deGraaf with three balloons and wig.

    Lecture 30 Friday, 04-21-2000
    electricity & magnetism
    Electric field lines for various configurations of wires on OHP.
    Magnetic field lines of bar magnet on OHP.
    Oersted's experiment.
    Magnetic field lines on OHP.

  • current carrying conductor
  • solenoid
    • Ampere's experiment with truck battery and parallel conductors.
    Faraday's experiment with magnet, coil and ammeter.
    Electromagnetic wave model.

    Lecture 31 Monday, 04-24-2000
    electromagnetic waves
    Electromagnetic wave model.
    Hertz resonator.
    Microwave optics:

  • reflection & standing waves
  • reflection off screen
  • polarization (Malus' law)
  • refraction in paraffin prism
  • diffraction with double slit
    • Aquarium scattering and polarization.
    Syrup tube polarization with mirror at 45 degrees.

    Lecture 32 Wednesday, 04-26-2000
    dipole radiation
    Aquarium scattering and polarization.
    Syrup tube polarization.
    particles
    CRT's:

  • Maltese cross
  • fluorescent minerals
  • fluorescent screen with bar magnet
    • Geiger counter to measure x-rays from Maltese cross CRT with thick pyrex dish for shielding.
    Deflection of beta particles by magnet.

    Lecture 33 Friday, 04-28-2000
    the structure of matter & blackbody radiation
    Vibrating (styrofoam/spring) crystal model.
    Crystal models (diamond, graphite, NaCl) and some real crystals.
    Optical analog of x-ray diffraction, laser through rotating silk stocking.
    1 kW bulb on variac.

    Lecture 34 Monday, 05-01-2000
    blackbody radiation & photoelectric effect
    1 kW bulb on variac.
    Heavy mass/spring combination.
    Photoelectric effect (zn on electroscope, UV light & 1 kW bulb).
    Determination of Planck's constant.

    Lecture 35 Wednesday, 05-03-2000
    Tether ball angular momentum conundrum.
    quantum mechanics & wave-particle duality
    Ring of fire.

    Lecture 36 Friday, 05-05-2000
    quantum mechanics & wave-particle duality
    Electron diffraction.
    Single photon interference.