crown glass

Hello, you have come here looking for the meaning of the word crown glass. In DICTIOUS you will not only get to know all the dictionary meanings for the word crown glass, but we will also tell you about its etymology, its characteristics and you will know how to say crown glass in singular and plural. Everything you need to know about the word crown glass you have here. The definition of the word crown glass will help you to be more precise and correct when speaking or writing your texts. Knowing the definition ofcrown glass, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.

English

Etymology

So called from a crown-like shape given to it in the process of blowing.

Noun

crown glass (usually uncountable, plural crown glasses)

  1. An early type of window glass made by blowing glass into a hollow globe (crown) and then flattening it on a punty, reheating and spinning out into a flat disk by centrifugal force.
  2. (optics) A variety of glass used in lenses and other optical components due to its low refractive index and dispersion. Originally crown glass was made from alkali-lime silicates with approximately 10% potassium oxide, but similar properties may be attained with other recipes.
    The convex half of an achromatic lens is composed of crown glass.

Translations

See also

Further reading

Wikious
Boobota
Sagapedia