射线 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "射线" in Chinese language version.

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1web.archive.org

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archive.org

Greivenkamp, John E. Field Guide to Geometric Optics. SPIE Field Guides. 2004: 2. ISBN 0819452947.
Arthur Schuster, An Introduction to the Theory of Optics, London: Edward Arnold, 1904 online.

web.archive.org

Moore, Ken. What is a ray?. ZEMAX Users' Knowledge Base. 25 July 2005 [30 May 2008]. （原始内容存档于2016-11-04）.

zemax.com

Moore, Ken. What is a ray?. ZEMAX Users' Knowledge Base. 25 July 2005 [30 May 2008]. （原始内容存档于2016-11-04）.