How To Use flint glass In A Sentence
- Although this peculiar disharmony in the dispersive powers of the two glasses, crown and flint, was discovered almost immediately after achromatism was invented, it was only recently that the first successful attempts were made to produce different glasses, which, possessing the other requirements for achromatic objectives, would produce coincident spectra, or nearer so than the ordinary crown and flint glass do. Scientific American Supplement, No. 561, October 2, 1886
- In a refracting telescope we have to employ what is known as the achromatic combination, consisting of one lens of flint glass and one of crown glass, adjusted to suit each other with extreme care. The Story of the Heavens
- The 'Barlow lens', a modification of this telescope lens, is a negative achromatic combination of flint glass and crown glass.
