| | Fourier and the theory of heat (Site not responding. Last check: 2007-10-15) |
 | | By 1800, alternatives to the caloric hypothesis appeared and, in 1811, Joseph Fourier (1768-1830) published a mathematical theory of heat conduction that was entirely independent of the caloric hypothesis. |
 | | Fourier's first step was to avoid speculation about "caloric." In this way, Fourier set the study of the theory of heat in the tradition of rational mechanics, basing it on differential equations that characterized the transmission of heat, equations that were independent of all physical hypotheses. |
 | | The heat transmitted between two molecules was proportional to the difference in their temperature and a function of the distance between them, which of course varied with the nature of the intervening substance. |
| www.victorianweb.org /science/fourier.html (462 words) |