Sapphire, Fused Silica, Crystal Quartz, Silicon, Germanium, BK7, CaF2, BaF2 and all kinds of Color Glasses, Non-Linear Crystals and Laser Gain KTP, KTA, BBO, LiNbO3
optical illusions
Optimax Systems produce all kinds of optical components. They produce optics for holograms and have even produced optics during wartime for the sights in rifles and binoculars for field viewing.
Radiographic film typically consists of an emulsion layer (containing silver halide crystals suspended in gelatin), a base (usually made of a flexible polyester material), and an overcoat layer to protect the emulsion. The film may also have an adhesive layer to adhere to the screens used in imaging.
I was also looking for the answer to this question. I decided to see what Wikipedia had to say about it, and found this: http://en.wikipedia.org/wiki/Absorbance This article kinda explains how they are related. Good luck!
A circuit usually looks like a square board filled with all kinds of metal electrical components. The components have many connections that are used to provide power to the unit.
Lava and Magma
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All kinds.
kinds of literative ? is spoken material
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Two kinds of deformation are plastic deformation, where the material changes shape permanently due to stress, and elastic deformation, where the material returns to its original shape after stress is removed.
An optical illusion is something that appears real but actually isn't. All kinds of optical illusions can be generated with mirrors, overlapped negatives, photography, etc.