Demonstrations

Identifier Title Summary
T: H - 053 Diatomic Model

A ball and stick model of a diatomic atom

 2 tennis balls on the ends of a stick; 2 power balls on the ends of a small stick
T: H - 052 Bimetallic Strips with Light Bulbs

A bimetallic strip is used to light one of 2 bulbs, depending on which direction it bends when it is heated.

 Light bulb and bimetallic strip apparatus
T: H - 051 Steel Wool and Liquid Oxygen

Steel wool immersed in liquid oxygen will easily catch fire

 Liquid oxygen, steel wool, tongs, beaker
T: H - 050 Elasticity of Rubber

A stretched rubber band will contract when heated.

 Mounted Ruler, Rubber Band with 1-kg mass attached, heat gun being used on the rubber band
T: H - 049 Thermobile
T: H - 048 Holding a Test Tube of Boiling Water

A test tube of water is held near the bottom while the top is tilted into the flame of a bunsen burner.

 Test Tube of Water, Bunsen Burner, Striker
T: H - 047 Stirling Cycle Heat Engine

Stirling Cycle Engine (working model + cutaway)

 Stirling Cycle Engine
T: H - 044 Thermoelectric Converter

A fan is powered entirely by differences in temperature between 2 beakers of water.

 Thermoelectric converter rests in a beaker of hot water and cold water.
T: H - 043 Boyle's Law with Syringes

Syringes with weights are used to demonstrate Boyle's Law.

 1-kg mass atop a piston made from a syringe and wood blocks; an extra weight rests nearby
T: H - 042 Triple Point of Liquid Nitrogen

Nitrogen exists at a solid, liquid and gas at the same time.

 Triple Point Apparatus
T: H - 040 Solid Phase Heat Engine
T: H - 039 Models of Steam and Gasoline Engines

Two cut-away locomotive engines are available for display

 Two cut-away locomotive engines
T: H - 038 Dipping Duck

A duck dips into a glass of water continuously.

 Dipping duck and a small beaker
T: H - 037 Gas Model
T: H - 036 Hero's Engine
T: H - 035 Pipe Pops its Cork due to Heating

Friction generated between wooden slats and a metal pipe causes water inside the pipe to vaporize, thus blowing the stopper out of the end.

 A wheel, a motor with an attached pipe, 2 allen wrenches, and hinged wooden slats
T: H - 034 Fire Piston

Swift action of the plunger in an air-tight piston causes a tiny bit of cotton to immediately ignite

 Two fire pistons, a cotton swab, and some cotton
T: H - 033 Boiling Water with an Ice Cube

Water boils due to the presence of an ice cube.

 Flask of water, bunsen burner, stand for boiling, ice cubes, gloves
T: H - 032 Cloud in a Bottle
T: H - 030 Liquification of Air

An air balloon is dipped into liquid nitrogen to create liquid

 Liquid nitrogen and a long air balloon
T: H - 028 Cryophorus

A cryophorus is used to demonstrate that freezing can occur by rapid evaporation

 A cryophorus rests next to a dewar of liquid nitrogen
T: H - 027 Gyser
T: H - 026 Regelation of Ice

Due to pressure, a wire melts through an ice cube that remains intact.

 2 kg hang from a wire placed atop an ice cube - apparatus is hung from a ring stand; a cup of ice rests nearby
T: H - 025 Dry Ice

Pieces of dry ice are used to help students visualize the P vs. T graph for Carbon Dioxide

 Styrofoam Cooler, Dry Ice, Tongs
T: H - 024 Paraffin Cake and Dissimilar Cylinders

5 cylinders made of different metals are heated and placed on top of a paraffin cake to demonstrate their differences in specific heat.

 5 dissimilar cylinders melt through paraffin at different rates
T: H - 020 Laser and Balloon
T: H - 019 Radiation Transfer with Mirrors

Two parabolic mirrors are used to transfer the heat from one, across the demo bench, to light matches in the other.

 2 cones mounted across the bench from each other.
T: H - 018 Convection of Gases

2  demonstrations that show air movement caused by differences in temperature.

 A candle in a glass tube and a chimney with a horizontal windmill.
T: H - 017 Davy Safety Lamp
T: H - 016 Paper with Wood and Metal
T: H - 015 Boiling Water in Plastic Bottle
T: H - 014 Thermal Conductivity Comparison

Rods of various metals have steel balls attached by wax.  One end of the rods are heated in the flame of a bunsen burner.  Over time, the balls on the rods drop off at different times.

 3 ring stands with rods of different metals. The rods have balls attached by wax. All three rods converge over a bunsen burner
T: H - 012 Low Temperature Behavior

Assorted objects are submerged in liquid nitrogen and smashed

 carnation, dewar of liquid nitrogen, ball, rubber, marshmallows, spoon, tongs
T: H - 010 Lamp with Heat

The wires of a small lamp are placed into an open flame.  As the wires heat up, the lamp dims due to the change in resistance of the wire.

 small lamp attached to a coil of wire, held horizontal on a small ring stand, and suspended above a bunsen burner
T: H - 006 Expansion and Contraction of Rings using Ball

A metal ring expands when heated.  A metal ring contracts when cool.  This is shown by whether or not they fit over a metal ball.

 A dewar of liquid nitrogen, a metal ball suspended from a stand rod, a meeker burner, and 2 metal rings rest on a bench
T: H - 005 Differential Gas Thermometer

A differential glass thermometer shows how liquids expand as they get warm.

 Differential Glass Thermometer
T: H - 003 Bimetallic Strips

A strip composed of two different types of metals is dipped into a dewar of liquid Nitrogen.  Since the metals contract at a different rate, they will curve one direction or the other.

 Two metal strips composed of different types of metal sit on the bench top.
T: H - 002 Sagging Wire

As current is passed through a wire, it heats up and expands

 A paper card hands from a wire suspended between 2 points
M: WM&S - 52 High Frequency EM Waves

A radio transmitter with Hertzian Dipole Antenna is used to create a standing wave.

 Dipole Apparatus
M: WM&S - 055 Slide Whistle

A slide whistle is used to demonstrate how pitch changes with the length of the cavity.

 Slide Whistle
M: WM&S - 054 Helmholtz Resonators

Sound is produced when blowing across the mouth of a pop bottle

 Two plastic bottles
M: WM&S - 053 Organ Pipes/Vibrating Columns of Air

A large pan-flute made of open-pipe tubes is used to demonstrate the physics of organs.

 Large pan flute
M: WM&S - 050 Speaker and Candle

A candle in front of a speaker will flicker when a speaker produces sound waves.

 A speaker sits on the second shelf of a cart with a candle in front of it. A frequency generator and amplifier sit on the top shelf of the cart
M: WM&S - 048 Musical Instruments
M: WM&S - 045 Doppler Effect

A whistle whirled in a circular path demonstrates the doppler effect

 Doppler whistle and power supply
M: WM&S - 043 Audio Beats

Two frequency generators are used to produce beats, consonance, and/or dissonance

 Oscilloscope, 2 Frequency Generators, and a Speaker
M: WM&S - 042 Torsion Wave Demonstrator

A collection of rods mounted on torsion wire can be used to demonstrate wave motion.

 Torsion Wave Machine
M: WM&S - 041 Drinking Straw Resonance
M: WM&S - 039 Resonance Rods

6 wooden cubes of 3 differing colors and lengths are attached to a board.  Wobbling the board back and forth at a different frequency will cause resonance in different colors of cubes

 Resonance Rod Apparatus
M: WM&S - 036 Moire Interference Patterns