UNIVERSAL HISTORY ARCHIVE / UIG / SCIENCE PHOTO LIBRARY UNIVERSAL HISTORY ARCHIVE / UIG / SCIENCE PHOTO LIBRARY
Artist's impression of the Benjamin Franklin's (1706-1790) investigation of the electrical nature of lightning, made at Philadelphia, USA, in September 1752. Franklin is flying a kite in a thunderstorm and is drawing a spark off the kite string using key. Engraving from The Boy's Playbook of Science by John Henry Pepper (London, 1862).
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