File:PSM V11 D682 Experiment showing the law of refraction.jpg

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Description Experiment showing the law of refraction
Date
Source Popular Science Monthly Volume 11
Author Unknown authorUnknown author
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current02:15, 28 July 2010Thumbnail for version as of 02:15, 28 July 20101,188 × 1,205 (439 KB)Ineuw (talk | contribs){{Information |Description = Experiment showing the law of refraction |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_11.djvu/682 |Date = 1877 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} {{GFDL-user-w

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