File:PSM V15 D831 Spectroscope disk close up.jpg

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PSM_V15_D831_Spectroscope_disk_close_up.jpg (502 × 183 pixels, file size: 11 KB, MIME type: image/jpeg)

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Description Spectroscope disk close up
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Source Popular Science Monthly Volume 15
Author Unknown authorUnknown author
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current04:02, 14 August 2010Thumbnail for version as of 04:02, 14 August 2010502 × 183 (11 KB)Ineuw (talk | contribs){{Information |Description = Spectroscope disk close up |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_15.djvu/831 |Date = 1879 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Category:Popular Science

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