Sponsored Links James Prescott Joule Complete Dating History Add new Post Sponsored Links James Prescott Joule wiki Login to Edit Bio: Scientist whose discoveries in heat and energy led to the Law of conservation of energy and the First law of thermodynamics. In 1845, he published a paper observing that mechanical power can be turned into heat.Date of Birth: 24 Dec, 1818Zodiac Sign: CapricornPlace of Birth: EnglandDied: 71 years agoDate of Death: 11 Oct, 1889Profession: Scientist Show more bio data > James Prescott Joule Latest Videos