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Date	Process	Result
July 14, 2009	Peer review	Reviewed

A fact from this article appeared on Wikipedia's Main Page in the "Did you know?" column on June 5, 2009.

The text of the entry was: Did you know ... that optics began with the development of lenses by the ancient Egyptians and Mesopotamians (dispersive prism pictured)?

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Optics (defunct)

This article is within the scope of WikiProject Optics, a project which is currently considered to be defunct.OpticsWikipedia:WikiProject OpticsTemplate:WikiProject OpticsOptics

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Wiki Education Foundation-supported course assignment

This article was the subject of a Wiki Education Foundation-supported course assignment, between 19 August 2019 and 6 December 2019. Further details are available on the course page. Student editor(s): Pgs870.

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Trigonometry

Who is the father of trigonometry? How many total trigonometric identities? Highlighter singh (talk) 15:41, 25 February 2016 (UTC)[reply]

This is the wrong place to ask that question. Try asking at Wikipedia:Reference desk/Mathematics.--Srleffler (talk) 02:24, 26 February 2016 (UTC)[reply]

External links modified

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Roger Bacon

"Bacon was able to use parts of glass spheres as magnifying glasses to demonstrate that light reflects from objects rather than being released from them."

This claim is made also in History of Optics; both articles would benefit from a citation which I have as yet been unable to discover. Any historians or physicists who can help out?TimeForLunch (talk) 15:02, 23 December 2016 (UTC)[reply]

Units !

There is absolutely nothing in this article about optical units. In fact when searching, "unit" is found in "community" and little else. An article about optics need to say something about these: lumen; candela, foot-candle, ... 47.215.188.197 (talk) 03:11, 8 February 2017 (UTC)[reply]

Categorization of Fiber optics

Editors of this article may be interested in the discussion at Talk:Silicon photonics#Fiber Optics & Silicon photonics. User:Ne0Freedom is trying to remove Category:Fiber optics from Category:Optics and instead put it in his newly created category, Category:Silicon photonics. I strongly oppose this. His view seems to be based on the misconception that anything optical with silicon in it (even silicon dioxide—glass) is automatically "silicon photonics".--Srleffler (talk) 01:52, 22 March 2017 (UTC)[reply]

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