James Prescott Joule

James Prescott Joule was an English physicist, mathematician and brewer, born in Salford, Lancashire. Joule studied the nature of heat, and discovered its relationship to mechanical work. This led to the law of conservation of energy, which in turn led to the development of the first law of thermodynamics. The SI derived unit of energy, the joule, is named after him.

24 December 1818

Born on the same birth day (24 December): Bartolomeo degli Organi • Carl Georg von Wächter • Daniel Johnson Jr. • Dima Bilan • Galba • Gene Sperling • Jane Summersett • Joey Smallwood • Johnny Gruelle • Jonathan Borofsky • Mariana of Austria • Max Miedinger • Stephen Appiah • Tim Jennings • Émile Nelligan • Đoàn Viết Hoạt

Born in the same month (December 1818): Carl Remigius Fresenius • Charles III, Prince of Monaco • Mary Todd Lincoln