# 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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• #### F2-01 ARCHIMEDES' PRINCIPLE

Demonstrates the buoyant force on a body submerged in a fluid to be equal to the weight of the displaced Read More
• #### F2-02: CARTESIAN DIVER

Demonstrate a variety of fluid mechanics phenomena, including the compressibility of a gas, the incompressibility of water, Boyle's law, Pascal's Read More
• #### F2-03: CARTESIAN DIVER - EXPLICIT VERSION

Demonstrate explicitly how a Cartesian diver works by showing how the water enters the diver when the pressure in the Read More
• #### F2-04: BUOYANCY - SPHERE AND WATER

Challenge the students' thinking about the buoyant force by considering the question: "Will a round object, without a flat top Read More

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

Show the difference in density between soft drinks with and without sugar. Read More
• #### F2-08: BUOYANCY - BATTLESHIP IN BATHTUB

Illustrate Archimedes' Law in a counterintuitive manner. Read More
• #### F2-10: BUOYANT BUBBLES

Demonstrate buoyancy and diffusion in an interesting way. Read More
• #### F2-11: HYDROMETER

Measure the density of a liquid. Read More
• #### F2-12: HOT AIR BALLOON

Show that hot air is less dense than cold air by operating a hot air balloon. Read More
• #### F2-13: BOUYANCY - EXPANDING BALLOON CONUNDRUM

Conundrum involving weight of an expanding balloon. Read More
• #### F2-21 REACTION TO BUOYANT FORCE

Demonstrates the reaction force using a liquid. Read More
• #### F2-22: BUOYANCY PARADOX - ACCELERATED FRAME

Illustrate dramatically the concept of buoyancy. Read More

• #### F2-26: BUOYANCY PARADOX - BALL IN TWO LIQUIDS

Demonstrate buoyancy with a counterintuitive element. Read More
• #### F2-27: Buoyancy Paradox - Two Spheres

Buoyancy of two spheres on a balance Read More
• #### F2-31: BUOYANT BALLS IN BEANS

Illustrate buoyancy in a surprising way. Read More
• #### F2-32: FLOATING SQUARE BAR

Illustrate buoyancy and the orientation in which a long square bar floats in a very dramatic way. Read More
• #### F2-41: DENSITY - SLOPE OF MASS VS VOLUME GRAPH

Determine the density of water. Read More
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