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  2. James Prescott Joule FRS FRSE (/ dʒ uː l /; 24 December 1818 – 11 October 1889) was an English physicist, mathematician and brewer, born in Salford, Lancashire. Joule studied the nature of heat, and discovered its relationship to mechanical work.

  3. James Prescott Joule, English physicist who established that the various forms of energy, such as electrical and heat, are basically the same and can be changed one into another. Thus, he formed the basis of conservation of energy, the first law of thermodynamics.

    • The Editors of Encyclopaedia Britannica
  4. Learn about the life and achievements of James Prescott Joule, a British scientist who studied heat, work and energy. He discovered the mechanical equivalent of heat, formulated Joule's law and the Joule-Thomson effect, and received the Copley Medal.

  5. James Prescott Joule (1818–89) is now rightly revered as one of the greatest scientists in the history of physics, due to his groundbreaking work in thermodynamics. However, this was not always the case—in his younger years, Joule struggled to be taken seriously by the scientific establishment.

  6. May 21, 2018 · The English physicist James Prescott Joule (1818-1889) proved that mechanical and thermal energies are interconvertible on a fixed basis, and thus he established the great principle of conservation of energy.

  7. Dec 3, 2018 · Learn how James Joule, a Salford brewer and scientist, proved that heat is a form of energy and developed the law of conservation of energy. Explore his experiments, equipment and legacy at the Science and Industry Museum and Central Library.

  8. Learn about the life and achievements of James Prescott Joule, a British physicist who discovered the mechanical equivalent of heat and the Joule-Thomson effect. Find entries from various Oxford Reference sources on his work and legacy.

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