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Optics


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Assorted Glass Lenses
red lasers

25 lenses including ACHROMATS, double convex positive, concave negative lens, WWII infra-red bomb site lens, miniscus, eye pieces, etc. These lenses, if purchased at todays prices, would cost well over $500.00! All pieces individually available in quantities.

- Assorted Lenses ... $49.95

CONCAVE MIRROR
concave mirror
concave mirror

Glass, optically worked. Back silvered with protective coating. 100mm Diameter x 250mm Focal Length.

Demonstrate the suns power by projecting a burning beam of light energy.

- Concave Mirror ... $4.80

CONVEX MIRROR
convex mirror
concave mirror

Glass, optically worked. Back silvered with protective coating. 100mm Diameter x 250mm Focal Length.

Demonstrate the suns power by projecting a burning beam of light energy.

- Convex Mirror ... $4.80

PRISMS

Prism Set of 3: 25mm, 50mm, 100mm

Prisms Optically Polished, Equilateral Set of 3, 1 each of:
25mm Long x 25mm Side
50mm Long x 25mm Side
100mm Long x 25mm Side

- Prism Set of 3 ... $14.50

PRISM, RIGHT ANGLE
concave mirror concave mirror Glass, large size. Right angle faces are approximately 50x50mm, and the hypotenuse face is approximately 50x70mm. Polished faces.
- Prism Right Angle ... $5.80

Acrylic Refraction Cube

Perfect for Index of Refraction and Total Internal Reflection experiments.

The bending of light as it passes from one substance to another is called refraction. Refraction causes the familiar mirage as we appear to see a nonexistent pool of water on a distant road on a very hot day. The ray of light can be totally reflected back inside the cube, leading to total internal reflection, not refraction.

These and other phenomena can be studied with our Refraction Cube. The index of refraction is about 1.5, meaning that the light travels 50% faster in air than it does upon entering the acrylic plastic. Faces are 5 cm square, instructions included.

- Acrylic Refraction Cube ... $19.95