File:Staite-Petrie Lamp 1847.png

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Self-regulating arc lamp proposed by William Edwards Staite and William Petrie in 1847.

Image credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=772510

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current13:54, 16 March 2025Thumbnail for version as of 13:54, 16 March 2025990 × 1,812 (44 KB)MDerrick (talk | contribs)

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