Crown glass

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

In collections

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What Wikipedia says

Crown glass is a type of optical glass used in lenses and other optical components. It has a relatively low refractive index (≈1.52) and low dispersion (with Abbe numbers between 50 and 85).

Excerpt from the Wikipedia article “Crown glass (optics)”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Abbe-diagram.png: Bob Mellish derivative work: Eric Bajart, CC BY-SA 3.0, via Wikimedia Commons.