ताज-कांच इसके अंग्रेजी अर्थ का उदाहरण

|Hard crown glass K5 || 1.

|Barium crown glass BaK4 || 1.

These tend to be based on the material composition, for example BK7 is the Schott Glass classification of a common borosilicate crown glass.

The original Georgian crown glass sash windows with glazing bars no longer exist.

The process of making crown glass window panes was perfected by French glassmakers in the 1320s, notably around Rouen, and was a trade secret.

As a result, crown glass was not made in London until 1678.

As well as the specific material named crown glass, there are other optical glasses with similar properties that are also called crown glasses.

For example, the borosilicate glass Schott BK7 is an extremely common crown glass, used in precision lenses.

Other additives used in crown glasses include zinc oxide, phosphorus pentoxide, barium oxide, fluorite and lanthanum oxide.

BAK-4 barium crown glass has a higher index of refraction than BK7, and is used for prisms in high-end binoculars.

A concave lens of flint glass is commonly combined with a convex lens of crown glass to produce an achromatic doublet.

Video of blowing crown glass by Corning Museum of Glass.