UNIVERSAL HISTORY ARCHIVE / UIG / SCIENCE PHOTO LIBRARY UNIVERSAL HISTORY ARCHIVE / UIG / SCIENCE PHOTO LIBRARY
Stephen Gray (1666-1736) English scientist born at Canterbury, Kent, credited with the discovery of the flow of electricity. Artist's impression of Gray passing electricity from a glass globe electrostatic machine down a 44.8 meter (147 feet) length of packthread (1729). Engraving from A Popular History of Science by Robert Routledge (London, 1881).
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