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Crown glass Subject

A wide variety of glasses possessing different indices of refraction is available for use in the visible region. For example, a light crown glass has an index of refraction of 1.5170 at 5893 A and a dense flint glass has an index of refraction of 1.6499 at the same wavelength. Salt (NaCl) crystals are used frequently since they are transparent in the infrared, but they are subject to severe deterioration unless carefully protected from moisture. [Pg.57]

See other pages where Crown glass Subject is mentioned: [Pg.237]    [Pg.71]    [Pg.461]    [Pg.402]    [Pg.221]    [Pg.232]    [Pg.268]    [Pg.211]    [Pg.64]    [Pg.280]    [Pg.177]    [Pg.685]    [Pg.241]   
See also in sourсe #XX -- [ Pg.285 ]



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Crown glass

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