# Geometrical Optics

## L3-18: FOCUSING OF HEAT WAVES - OVERHEAD PROJECTOR

Category: L3 Curved Mirrors
Purpose: Illustrate focusing of heat in a very dramatic way.

## L3-13: OPTICAL BOARD - SPHERICAL ABERRATION IN CONCAVE MIRROR

Category: L3 Curved Mirrors
Purpose: Show spherical aberration in a spherical mirror.

## L3-12: OPTICAL BOARD - RAY DIAGRAM - CONCAVE MIRROR

Category: L3 Curved Mirrors
Purpose: Locate the image of a concave mirror by using the three principal rays.

## L3-11: OPTICAL BOARD - CONCAVE SPHERICAL MIRROR

Category: L3 Curved Mirrors
Purpose: Illustrate reflection from a concave spherical mirror.

## L3-02: OPTICAL BOARD - RAY DIAGRAM - CONVEX MIRROR

Category: L3 Curved Mirrors
Purpose: Determine the image position for an object in front of a convex mirror using the three principal rays.

## L3-01: OPTICAL BOARD - CONVEX SPHERICAL MIRROR

Category: L3 Curved Mirrors
Purpose: Show reflection of light rays from a convex mirror.

## E2-42: TELESCOPE MODEL

Category: E2 Astronomy
Purpose: Show how a telescope can view any point in the sky using a universal mount.

## E2-24: UMBRA AND PENUMBRA - COLOR FILTERS

Category: E2 Astronomy
Purpose: Identify the source of penumbra regions.

## E2-23: UMBRA AND PENUMBRA - EXTENDED SOURCE

Category: E2 Astronomy
Purpose: Show umbra and penumbra with an extended source, as in an eclipse.

## E2-02: MEASUREMENT OF RADIUS OF EARTH

Category: E2 Astronomy
Purpose: Demonstrate how the radius of the earth can be measured using trigonometry.

## L2-42: CORNER REFLECTOR - MIRROR TILES

Category: L2 Plane Mirrors
Purpose: Show what a corner reflector does

## L2-63: TELEIDOSCOPE

Category: L2 Plane Mirrors
Purpose: Demonstrate a kaleidoscope with rotating mirrors.

## L2-62: MULTIPLE REFLECTIONS WITH MIRROR TILES

Category: L2 Plane Mirrors
Purpose: Show multiple reflections in a three-dimensional system of mirrors.

## L2-46: CORNER REFLECTOR - MODELS

Category: L2 Plane Mirrors
Purpose: Model how the rays reflect in a corner reflector.

## L2-45: MICROWAVES - CORNER REFLECTOR

Category: L2 Plane Mirrors
Purpose: A two-dimensional microwave corner reflector.

## L2-44: CORNER REFLECTOR - HAND HELD

Category: L2 Plane Mirrors
Purpose: Demonstrate dramatically how a corner reflector works.

## L2-43: CORNER REFLECTOR - ROTATING

Category: L2 Plane Mirrors
Purpose: Show that the reflected ray from a corner reflector is parallel to the incoming ray.

## L2-41: OPTICAL BOARD - CORNER REFLECTOR

Category: L2 Plane Mirrors
Purpose: Show how a corner reflector works in two dimensions.

## L2-25: LIGHT BULB IN WATER

Category: L2 Plane Mirrors
Purpose: Do a magic trick using partially reflected light.

## L2-22: INFINITY MIRROR

Category: L2 Plane Mirrors
Purpose: Illusion with half-silvered mirror.
Page 6 of 10
• #### N3-01: ADDITIVE COLOR MIXING OF LIGHTS

Demonstrate color mixing of lights. Read More

• #### N3-04: POSITIVE COLOR MIXING IN COLOR TV

Show how color TV produces colors. Read More
• #### N3-05: COLOR MIXING VIA CHROMATICITY DIAGRAM

Detailed demonstration of color mixing. Read More

• #### N3-09: COLOR THEORY SLIDE

Show origin of positive and negative colors. Read More

• #### N3-22: SUBTRACTIVE FILTERS AND THEIR SPECTRA

Compare colors and spectra of negative filters. Read More
• #### N3-23: COLOR PERCEPTION WITH DYES AND FILTERS

Compare colors and spectra of dyes and filters. Read More
• #### N3-24: FILTERGRAPH

Show colors with their spectra. Read More
• #### N3-25: SERIES RED FILTERS

Show saturation using series filters. Read More
• #### N3-26: COLOR FILTER SETS

Several color filter sets are available for use as the instructor desires. Read More
• #### N3-27: NEGATIVE FILTERS IN SERIES

Demonstrate how negative filters combine to give color combinations Read More
• #### N3-28: HOLLOW PRISM

Observe the color spectrum of white light using a prism filled with liquid. Read More
• #### N3-31: COLOR SEPARATION TRANSPARENCIES

Illustrate color mixing of negative color transparencies. Read More
• #### N3-32: COLOR SEPARATION TRANSPARENCIES - LARGE

Illustrate color mixing of negative color transparencies. Read More
• #### N3-33: MAXWELL'S EXPERIMENT - THREE-COLOR MIXING

Demonstrate three-color mixing with positive colors. Read More
• #### N3-41: SPLITTING OF SPECTRUM INTO COMPLEMENTARY COLORS

Show complementary colors by removing a band from the white light spectrum. Read More
• #### N3-43: COLORS REFLECTED FROM COLORED OBJECTS

Show why colored objects look colored. Read More
• #### N3-44: THE COLOR OF COPPER

Show that light reflected from copper is a desaturate orange. Read More
• #### N3-45: REFLECTION AND TRANSMISSION FROM GOLD FOIL

Show the complementary relationship between light reflected from and transmitted by a thin gold foil. Read More
• #### N3-51: SPECTRUM WITH MINICAM AND VIDEO PROJECTOR

Demonstrate how color TV equipment derives its color, and to illustrate a defect in handling of saturated colors such as spectra. Read More
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