James Prescott Joule (1818-1889) was a British physicist whose work on the relations between electrical, mechanical, and chemical effects led to the discovery of the first law of thermodynamics, that energy can be neither created nor destroyed.
He was a brewery owner, and dedicated to precise scientific research. He determined the mechanical equivalent of heat (Joule's equivalent), and the SI unit of energy, the joule, is named after him.
Why is James Prescott Joule famous?
James Prescott Joule was an English physicist and scientist.
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