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https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13998202

An optical experiment using a giant lens to reflect sun-rays to create fire, with optical instruments scattered and fountains in a Baroque setting. Line engraving by C.N. Cochin the elder, 1737, after J. de La Jouë.

Original public domain image from Wellcome Collection

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An optical experiment using a giant lens to reflect sun-rays to create fire, with optical instruments scattered and fountains in a Baroque setting. Line engraving by C.N. Cochin the elder, 1737, after J. de La Jouë.

More