= James Prescott Joule
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James Prescott Joule (1818-1889) was an English physicist and brewer best known for his contributions to the understanding of energy and the relationship between heat and mechanical work. He is most famous for formulating the first law of thermodynamics and for his work on the concept of energy conservation. One of his notable experiments involved demonstrating that mechanical work could be converted into heat, which helped establish the basis for the law of conservation of energy.
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