# Needs New Photo

## B1-17: CENTER OF MASS - STICKS

Purpose: Illustrate the center of mass in a surprising way

## B1-12: CENTER OF MASS - HINGED STICK PARADOX

Purpose: Illustrate the center of mass in a surprising way

## B1-11: BALANCE MAN

Purpose: Illustrate stable equilibrium

## B1-09: CENTER OF MASS - TRIANGLE

Purpose: Demonstrate the process of locating the center of mass

## B1-07: DOUBLE CONE - SMALL

Purpose: Demonstrate a center of mass paradox

## A2-32: HEIGHT MEASUREMENT BY TRIGONOMETRY

Category: A2 Mathematics
Purpose: Determine the height of a student using trigonometry

## A2-23: VECTOR PRODUCT

Category: A2 Mathematics
Purpose: Illustrate the product of two vectors

## A2-21: MAGNETIC VECTOR BOARD

Category: A2 Mathematics
Purpose: Demonstrate properties of vectors

## A2-15: HYPERBOLOID FROM STRAIGHT LINES

Category: A2 Mathematics
Purpose: Approximate the hyperboloid

## A2-12: SLATED SPHERE

Category: A2 Mathematics
Purpose: Demonstrate rotation and spherical geometry

## A2-11: CIRCUMFERENCE VS. DIAMETER - CHAIN ON CYLINDER

Category: A2 Mathematics
Purpose: Show the relationship between the diameter and the circumference of a circle

## A2-02: XYZ AXES ON EXTENDED HANDLE

Category: A2 Mathematics
Purpose: Aid in discussing angular momentum

## A2-01: CARTESIAN COORDINATE AXES

Category: A2 Mathematics
Purpose: Illustrate a standard right-handed cartesian coordinate system

## D5-13: FOCAULT PENDULUM - MODEL

Purpose: Model the Foucault pendulum

## O1-01: EYE MODEL - OPTICS

Purpose: Demonstrates optics of the eye and corrections of optical defects

## L3-16 FOCUSING OF HEAT WAVES BY MIRRORS

Category: L3 Curved Mirrors
Purpose: Demonstrates that concave mirrors can focus heat waves

## K2-03 FARADAY'S EXPERIMENT ON INDUCTION

Purpose: Demonstrates the induction between two coils

## H4-04 FOURIER ANALYSIS - DIGITAL OSCILLOSCOPE

Category: H4 Music
Purpose: Demonstrates the Fourier spectrum of complex waves

## G3-53 STANDING WAVES IN A STRING

Purpose: Demonstrates standing waves on a thin string

## D1-61: Rolling versus Sliding

Purpose: Applies conservation of energy to a rolling object
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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