Horseshoe-shaped electromagnet used by James Joule, c.1840. This electromagnet was used by the scientist James Joule for experiments about energy. Joule was a Salford resident and the son of a brewer. He was taught by the famous scientist John Dalton. Joule's experiments in 1845 led him to an new understanding of energy conversion.
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- Gift of University of Manchester Institute of Science & Technology
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