# PHYS121

## I6-52: ENTROPY - FOUR BALLS IN GAS DIFFUSION MODEL

Purpose: Demonstrate that an ordered state is statistically possible.

## I6-33: MOLECULAR MOTION DEMO - GAS PRESSURE

Purpose: Model gas pressure.

## I4-19: CONDENSATION OF STEAM - SODA CAN COLLAPSE

Purpose: Surprising demonstration using condensation of steam.

## I3-52: CONSTANT VOLUME GAS THERMOMETER - ABSOLUTE ZERO

Category: I3 Gases
Purpose: Determine the value of absolute zero.

## I3-19: LIFTING USING ATMOSPHERIC PRESSURE

Category: I3 Gases
Purpose: Dramatically demonstrate an effect of air pressure.

## I3-12: WATER BAROMETER - CAN CRUSHER

Category: I3 Gases
Purpose: Illustrate a result of atmospheric pressure.

## I2-27: THERMAL EQUILIBRIUM BETWEEN ALUMINUM AND COPPER

Purpose: Show process of thermal equilibrium happening between touching aluminum and copper cylinders.

## I1-01: THERMOMETERS

Purpose: Show several types of thermometers.

## F4-11: LAMINAR AND TURBULENT FLOW OF AIR

Category: F4 Fluid in Motion
Purpose: Demonstrate laminar and turbulent flow.

## F4-01: VISCOSITY OF LIQUIDS

Category: F4 Fluid in Motion
Purpose: Compare the viscosities of water and mineral oil.

## F2-13: BOUYANCY - EXPANDING BALLOON CONUNDRUM

Category: F2 Buoyancy
Purpose: Conundrum involving weight of an expanding balloon.

## F2-07: BUOYANCY - PEPSI AND DIET PEPSI

Category: F2 Buoyancy
Purpose: Show the difference in density between soft drinks with and without sugar.

## F2-04: BUOYANCY - SPHERE AND WATER

Category: F2 Buoyancy
Purpose: Challenge the students' thinking about the buoyant force by considering the question: "Will a round object, without a flat top and bottom surface, experience a buoyant force, as does a cylinder?"

## F1-11: HYDRAULIC PRESS

Purpose: Demonstrate dramatically Pascal's Law and the large forces attainable using hydraulic systems.

## F1-05: DOES WATER SEEK ITS OWN LEVEL?

Purpose: A trick to challenge the students.

## F1-04: EQUILIBRIUM TUBES

Purpose: Demonstrate that pressure is transmitted equally throughout a fluid.

## F1-02: FLUID PRESSURE VS DEPTH - ANEROID GAUGE

Purpose: Show water pressure versus depth with an aneroid gauge.

## D2-05: DUMBBELL - VARIABLE MOMENT OF INERTIA

Purpose: Demonstrate the effect of moment of inertia.

## B4-14: ELASTIC LIMIT OF WIRE

Category: B4 Elasticity
Purpose: Demonstrate the variation in tensile strength with wire diameter.
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• #### K4-01: AC/DC GENERATOR

Demonstrate a simple AC/DC generator Read More
• #### K4-02 MAGNETOELECTRIC GENERATOR WITH LAMP

Demonstrate a small 110VAC magnetoelectric generator Read More
• #### K4-04: MAGNETOELECTRIC GENERATOR WITH AC INDICATOR BULB

Show explicitly a generator producing AC output Read More

• #### K4-06: MAGNETOELECTRIC GENERATOR WITH CAPACITOR

Demonstrate that the generator is producing electrical energy, and that the capacitor stores electrical energy Read More
• #### K4-07 BICYCLE GENERATOR

Demonstrates a large scale 110 VAC magnetoelectric generator Read More
• #### K4-08: MAGNETOELECTRIC GENERATOR WITH INDUCTOR

Demonstrate how a magnetoelectric generator stores energy in an inductor and how that energy is returned to the generator Read More
• #### K4-09: BICYCLE GENERATOR - LIGHT BULBs VS CFLs

Compare brightness and power requirements of regular tungsten filament light bulbs and compact fluorescent lamps Read More
• #### K4-21: ST. LOUIS MOTOR

Demonstrate the structure and operation of a simple motor Read More
• #### K4-22: DC MOTOR

Show how a DC motor works Read More
• #### K4-23: AC MOTOR - SYNCHRONOUS

Demonstrate the concept of a synchronous motor Read More
• #### K4-24: AC/DC MOTOR

Demonstrate the construction and the operation of AC and DC motors Read More
• #### K4-25: DC MOTOR - HOMEMADE

Illustrate possibly the world's simplest motor Read More
• #### K4-41: MOTOR-GENERATOR PAIR

Demonstrate that a motor and a generator are the same Read More
• #### K4-51: UNIPOLAR MOTOR

Demonstrate a very simple unipolar motor Read More
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