File:PSM V05 D045 Snell law of refraction.jpg

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Description Snell law of refraction
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Source Popular Science Monthly Volume 5
Author Unknown authorUnknown author
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current21:59, 30 June 2010Thumbnail for version as of 21:59, 30 June 20102,027 × 879 (248 KB)Ineuw (talk | contribs){{Information |Description = Snell law of refraction |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_5.djvu/45 |Date = 1874 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} {{GFDL-user-w|en|Wikisource|Ineu

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