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crown glass


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  • Archaeology
  • Astronomy and Astrophysics

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A basic variety of optical glass, containing a high percentage of potassium and calcium. It has a refractive index of about 1.5, and on average has a lower dispersion of light than the other main basic optical glass, flint glass. Crown glass has a lower density than flint glass but is more durable.

Subjects: Archaeology — Astronomy and Astrophysics.


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