File:Geissler tube.png

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Geissler_tube.png(268 × 374 pixels, file size: 18 KB, MIME type: image/png)

Nonfiction: Geissler tube. Circa 1885.

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Attribution: By Unknown - This file has been extracted from another file: Meyers b7 s0029.jpg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=67092102

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current19:43, 12 November 2018Thumbnail for version as of 19:43, 12 November 2018268 × 374 (18 KB)Admin (talk | contribs)

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