Change: Possible photo of Petit. [4]In science, Alexis Thérèse Petit (1791-1820) was a French physicist noted for his 1818 publication on the efficiencies of air-engines and steam-engines and for his 1817 work with French physicial chemist Pierre Dulong in the correction of Newton's law of cooling. [1]   View changes from previous version. (Word count: 289)

Change: , the French sociologist and philosopher who is generally credited with having coined the term sociology and who first outlined the subject of "social physics". Physics, for Comte, was his most difficult class, because, in his own words, Petit "went too fast". [3]References 1. Whewell, William. (1866).   View changes from previous version. (Word count: 274)

Change: . [1] More notably, in 1819 they discovered that the specific heat of any solid element multiplied by its atomic weight is approximately equal to a constant. [2] This has come to be known as the Dulong-Petit law for the specific heat capacity of metals. Education Petit studied at the   View changes from previous version. (Word count: 197)