File:NSRW A Converging Lens with one plane surface.jpg

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NSRW_A_Converging_Lens_with_one_plane_surface.jpg (427 × 421 pixels, file size: 27 KB, MIME type: image/jpeg)

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Source The New Student's Reference Work
Author Unknown authorUnknown author

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This file has been extracted from an original image in The New Student's Reference Work: File:LA2-NSRW-3-0046.jpg.

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Public domain

The author died in 1936, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 80 years or fewer.


This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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current05:25, 28 October 2015Thumbnail for version as of 05:25, 28 October 2015427 × 421 (27 KB)BMacZero (talk | contribs)File:LA2-NSRW-3-0046.jpg cropped 77 % horizontally and 85 % vertically using CropTool with lossless mode.

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