# Needs New Photo

## 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.

## F1-03: PASCAL'S VASES

Purpose: Demonstrate that pressure is dependent only on depth, and not on the shape of the container.

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

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

## D3-41: AIR TABLE - RECTANGULAR PUCK COLLISIONS

Purpose: Qualitatively show conservation of angular momentum in collisions of a circular puck with a rectangular puck.

## D3-32: KEYWHIP

Purpose: Demonstrate angular momentum conservation in a surprising way.

## D4-24: GYROCOMPASS - MODEL

Category: D4 Gyroscopes
Purpose: Demonstrate how a gyrocompass works.

## D3-12: SWING MODEL

Purpose: Model the pumping of a swing using conservation of angular momentum.

## D3-06: ROTATING CHAIR - HELICOPTER MODEL

Purpose: Demonstrate conservation of angular momentum.

## D3-04: ROTATING STOOL AND WEIGHTS

Purpose: Demonstrate conservation of angular momentum.

## D2-43: MOMENT OF INERTIA - TORSIONAL CHAIR AND WEIGHTS

Purpose: Demonstrate the effect of moment of inertia.

## D2-42: MOMENT OF INERTIA -TORSIONAL CHAIR AND BOARD

Purpose: Demonstrate moment of inertia using the torsional chair.

## D2-41: MOMENTS OF INERTIA ABOUT THREE PRINCIPAL AXES

Purpose: Illustrate the three principal axes of a thin aluminum plate.

## D2-32: AIR TABLE - LINEAR AND ANGULAR ACCEL OF A DISC

Purpose: Illustrate the accelerating disc problem.

## D2-21: CENTER OF PERCUSSION - BAT AND MALLET

Purpose: Demonstrate the center of percussion using a baseball bat.

## D2-13: RACING PENDULA

Purpose: Illustrate in a counter-intuitive way the effect of moment of inertia on rotational acceleration.

## D2-12: TOPPLING CHIMNEY

Purpose: Demonstrate how a toppling chimney breaks up.

## D2-11: HINGED STICK AND FALLING BALL

Purpose: Application of the rotational analog of Newton's second law.

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

Purpose: Demonstrate the effect of moment of inertia.

## D2-03: CANS ON INCLINED PLANE - WITH AND WITHOUT WATER

Purpose: Illustrate the effect of moment of inertia on rolling acceleration.
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• #### O1-01: EYE MODEL - OPTICS

Demonstrate the optics of the eye and corrections of optical defects. Read More
• #### O1-02: EYE OPTICS MODEL - INDIVIDUAL VIEWING

Show inversion of the image on the retina by the eyelens. Read More
• #### O1-03: IMAGE INVERSION ON RETINA

Model image inversion on the retina. Read More
• #### O1-04: IMAGE INVERSION ON RETINA - INDIVIDUAL VIEWING

Individual demonstration of image inversion on retina. Read More

• #### O1-11: TEST OF NEARSIGHTEDNESS VS. FARSIGHTEDNESS

Identify nearsighted and farsighted eyes using laser speckle. Read More

• #### O1-22: SPHERICAL ABERRATION IN EYE USING PINHOLE

Show spherical aberration in eye and its correction. Read More