Investigating atmospheric electricity

Investigating atmospheric electricity

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Credit: Universal History Archive/UIG/SCIENCE PHOTO LIBRARY

Caption: Investigating atmospheric electricity in normal cloudy conditions, but not during a thunderstorm. GF: windlass for raising and lowering a kite. AB: wooden frame supported by mahogany legs with glass cones covered with brass funnels to prevent glass getting wet. H: drawing spark from conductor and experiencing shock similar in strength to that from a fully charged Leyden jar. Leyden jar was attached to conductor, but it was not fully charged. Engraving from Practical Electricity and Galvanism by John Cuthbertson (London, 1807).

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