List of Undergraduate Demos

Atwood machine: Unbalanced weights on a pulley accelerate slowly.

Cork float accelerometer: Cork and water in sealed flask.

Swinging mass M lifts mass 2M

A ball swung on a string held by a sleeve.

Chain lariat with hand drill or electric rotator

Ball on string mounts on blackboard and pivots on lower rod.

Equal path lengths ball race.

Blocks, with various surfaces slide on an inclined plane.

Weight on a vertical spring with markers on stand

Block pulled horizontally by a spring.

Card snapped from under a weight by a leaf spring.

A+25+15 Rotational Inertia Wands

A+30-not in catalog
Bicycle wheel with attached string

A+35+5 Elastic collisions: Seven steel balls roll on a wooden track.

A+50+20 Rocket is filled with water and compressed air and launched vertically.

A+55+0 "Sweet Spot": Meterstick pivot point changes with point struck.

A+55+5 Rolling spool: String on spool is pulled at various angles.

A+55+10 Cycloid disk draws path on chalkboard.

A+60+32 Center of gravity (toy) objects.

A+60+37 Rotation about the center of mass: Object to throw.

A+60+45 Center of mass of a baseball bat

A+60+55 Stacking Blocks Extend Over Base

A+70+20 Rope with slug(unit of mass) in center is lifted from ends.

B+10+0 Mass on a spring.

B+10+1 Simple pendulum: Ball on a string.

B+10+60 Tuning forks, various.

B+15+15 Two balls hung on the same string, one in middle, one at the end.

B+20+15 One tuning fork with tuned cavity, drives another.

B+45+32 Twirling Tube

B+45+40 Caruga horn: Varigated tube to blow through

B+50+35 Xylophone.

C+20+5 Crooke's radiometer with flashlight, arc lamp or IR source.

C+25+4 Airzooka

C+25+50 A water vortex in two soda bottles joined vertically.

C+27+5 Various bubble frames.

C+30+35 Cartesian divers: Pressure on cap sends divers sinking.

C+30+62 Mat held down by atmospheric pressure.

C+70+47 Dippy bird: Large glass bird containing ether oscillates.

C+90+15 Shear: Stack of masonite squares.

C+90+16 Shear: Foam block.

D+10+4 Pith balls on thread, with positive and negative charged rods.

D+10+6 Attraction and repulsion of charged styrofoam balls.

D+10+12 Charge resides on the outside of a conductor.

D+10+13 Faraday cage: blocks signal from portable radio

D+10+16 Separation of charge using electrical tape and an electroscope.

D+10+18 Electrophorous: Cat fur on teflon, acetate on lucite.

D+10+20 Van de Graaff generator.

D+10+24 Electrostatic pinwheel:Van de Graaff makes pinwheel spin.

D+15+20 Jumping rings: High current AC coil causes rings to jump.
(no LN2 for undergrads)

D+15+26 Eddy currents:Small magnet slowly drops between aluminum rails.

D+15+45 Magnet inserted and withdrawn from copper ring causes ring to swing=
(no LN2 for undergrads)

D+30+6 Iron filings and permanent magnets to show field on an OHP.
(Plexiglass only as transparent surface)

D+35+0 Wobbly bar: Magnets in frame balanced by repulsive forces.

D+35+15 Mass Driver

D+35+20 Curie Temperature

D+55+18 Resistor analog: Marbles cascading down pin board.

D+60+8 Commercial solar cell spins propeller using small arc lamp.

D+75+3 Secondary used for small Jacob's ladder.

D+75+6 Automobile coil makes a spark.

E+10+45 Limit of resolution: Two small lamps on adjustable slide.

E+5+0 Standard color blindness tests and box of colored yarns.

E+5+25 Cyan, magenta, and yellow filters mix subtractively on OHP.

E+15+25 Hand-held gratings for class to view Hg, Ne discharge tubes.

E+20+6 Reflection hologram viewed with white light.

E+25+20 Red/green/blue line source viewed with double slit paddles.

E+30+15 Real images: Lighted arrow image and various lenses.

E+30+17 Real images: Lighted =E2=80=98F-object=E2=80=99 and an astygmatic l=

E+30+18 Real images: Lighted =E2=80=98F-object=E2=80=99 and a cylindrical l=

E+30+20 Cylindrical lens of lucite with words "DIOXIDE GLASS".

E+30+25 Fresnel lenses to show.

E+40+40 Clam shell mirrors: Floating coin illusion.

E+45+60 Polarized light and stressed lucite on an OHP.
(not with OHP for undergrads)

E+50+35 Binoculars and Porro prisms to show.

E+60+2 Indices of Refraction: glass in glycerin and phantom crystals.

E+60+5 Total internal reflection/critical angle: Nakamura water tank.

E+60+15 Light pipes and fiber optic flashlight.

E+65+5 Crooke's radiometer with flashlight or IR source.

F+15+20 Commercial solar cell spins propeller using halogen light source.

F+20+10 Model of the nucleus: Steel balls in plastic dish on OHP.

G+5+5 Earth, Sun, and Mars model.

G+5+10 Solar system model.

G+55+10 Optical illusion posters.

G+60+20 Set of color blindness cards.