Fused quartz and silica are closely related materials, both composed primarily of silicon dioxide (SiO2), but they are produced through different manufacturing processes and have distinct properties and applications. fused quartz and silica...

Anisotropic is a term used to describe a material or substance that exhibits different properties or behaviors in different...

A glass-ceramic material developed in Russia. Astrosital resembles Zerodur in terms of its ultralow thermal expansion. Other...

Trade name for a type of borosilicate glass manufactured by Corning Glass Works, noted for its low coefficient of thermal...

A device used to detect radiant energy by means of the thermal expansion of gas.

An optical material used in place of crown glass to produce lenses with extraordinary correction of chromatic aberrations....

The naturally occurring crystalline form of silicon dioxide. It is slightly birefringent and exhibits rotary dispersion of...

A copolymer of styrene and acrylic used in molded optical components; it has a high refractive index and a low coefficient...

A form of shearing interferometer that contains a simple wedged (plane-parallel) glass plate with a nonzero optical path...

A material often used in the construction of optical instruments because of its low coefficient of thermal expansion (0.9 x...

Anisotropy refers to the property of exhibiting different values or characteristics when measured in different directions....

A numerical representation of the rate at which a material will exhibit dimensional changes as a direct result of changes in...

Optical glass refers to a type of glass specifically engineered and manufactured for use in optical components and systems,...

Schott Glass Technologies' trade name for a glass-ceramic material with a very low coefficient of thermal expansion.

Westinghouse trade name for an alloy of iron, nickel and cobalt, which has the same thermal expansion as glass and therefore...