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.
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
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.
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, RIGHT ANGLE
Glass, large size. Right angle faces are approximately 50x50mm, and the hypotenuse face is approximately 50x70mm. Polished faces.
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.
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