The Heat Capacity of Diamond from 70 to 300°K

The specific heat of diamond has been measured over the temperature range 70 to 300°K, and is compared with the theoretical formula of Debye. Small but definite deviations are observed, which in both direction and order of magnitude are those to be expected when the approximations of the Debye formula are taken into consideration. The entropy of diamond at 298.1°K is 0.585±0.005 cal. per degree per mole.