NOUN
- optical glass of low dispersion and low refractive index
- a glass blown into a globe which is later flattened and spun to form a disk
How To Use crown glass In A Sentence
- Glass has historic value, too: keep crown glass panes with wavy or circular patterns. Times, Sunday Times
- 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.
