File:The wonders of optics - Fig 73.png

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Summary

Description
English: How to produce Spectres.
Date
Source https://en.wikisource.org/wiki/Page:The_wonders_of_optics_(1869).djvu/281
Author Fulgence Marion

Licensing

Public domain
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.

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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:The_wonders_of_optics_-_Fig_73.png

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How to produce Spectres.

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