Dulong and Petit's Law

Also found in: Medical.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Dulong and Petit’s Law


an empirical rule according to which the specific heat of all simple solids at constant volume does not depend on temperature and is 6 cal/mole-deg). It was established by the French scientists P. Dulong and A. Petit in 1819. Dulong and Petit’s law is approximately correct for the majority of elements and simple compounds at room temperature. At low temperatures, Dulong and Petit’s law is not valid.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.