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Image: Hydrogen maser

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Description: Hydrogen maser
Title: Hydrogen maser
Credit: http://horology.jpl.nasa.gov/h_maser.html by 21:59, 9 December 2005 (UTC) Transferred from en.wikipedia to Commons. Archived link https://web.archive.org/web/20100528051902/http://horology.jpl.nasa.gov/h_maser.html
Author: The original uploader was JustinWick at English Wikipedia
License: Attribution

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