# 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
• #### L7-01: LIGHT METERS

Show light meters and maybe even use one Read More
• #### L7-02: FOCAL PLANE SHUTTER - CHALKBOARD MODEL

Illustrate how a focal plane shutter works Read More
• #### L7-03: SHUTTER SPEED OF A CAMERA

Measure the shutter speed of a camera Read More
• #### L7-04: DEPTH OF FIELD AND FIELD OF VIEW

Demonstrate depth of field as a function of aperture setting, and to demonstrate field of view as a function of Read More
• #### L7-05: VIDEO CAMERA WITH VARIOUS LENSES

Demonstrate various lenses for a video camera Read More
• #### L7-11: OPTICAL BOARD - ASTRONOMICAL TELESCOPE

Model the optics of an astronomical telescope Read More
• #### L7-12: OPTICAL BOARD - TELEPHOTO LENS

Illustrate the location of the principal planes in a telephoto lens Read More
• #### L7-13: OPTICAL BOARD - GALILEAN TELESCOPE

Model the optics of a Galilean telescope Read More
• #### L7-14: OPTICAL BOARD - REFLECTING TELESCOPE

To illustrate rays in one type of reflecting telescope Read More
• #### L7-15: MICROSCOPE

Demonstrate how the optics of a microscope produces a magnified image Read More
• #### L7-16: GALILEOSCOPE

Show how the optics and lenses in a telescope work Read More
• #### L7-21: MAGNIFYING GLASS - TV

Illustrate how a magnifying glass works Read More
• #### L7-22: MICROSCOPE - TV

Illustrate how a microscope works Read More
• #### L7-23: ASTRONOMICAL TELESCOPE - TV

Illustrate how an astronomical telescope works Read More
• #### L7-24: TERRESTRIAL TELESCOPE - TV

Illustrate how a terrestrial telescope works Read More
• #### L7-25: GALILEAN TELESCOPE - TV

Illustrate how a Galilean telescope works Read More
• #### L7-31: PRINCIPAL PLANES

Illustrate principal planes of a compound lens system Read More
• #### L7-32: FIELD LENS

Show what a field lens does Read More
• #### L7-33: OVERHEAD PROJECTOR - DISSECTED

Show how an overhead projector works and to view its components Read More
• #### L7-34: SLIDE PROJECTOR - DISSECTED

Show how a slide projector works and to view its parts Read More
• #### L7-41: REAL IMAGE - MIRROR AND LENS

Determine the location of a real image in a complex lens-mirror system Read More
• #### L7-42: VIRTUAL IMAGE - MIRROR AND LENS

Calculate the position of a virtual image and the verify this by using parallax Read More
• #### L7-43: Telephoto Lens Model - Point Source

A model of the assembly and function of a telephoto lens attachment. Read More
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