## Heat Capacity

For users of the Mathcad browser: wmc-cv1.mcd (8 KB, ver. 5.0)
The heat capacity of solids is usually computed by the Dulong-Petit
rule:

* C*v = 3*R*

This expression gives acceptable values only at high
temperatures. Debay has given a more general
formula based on the vibrational modes of the crystal.

Some values
for the Debay temperature are as follows:

Na | K | Cu |
Ag | Au | Be |
Mg | Ca | Hg |

159 | 100 | 315 | 215 | 180 | 1000 | 290 | 230 | 96 |

In order to plot this function the temperature is defined as an array, for example from 10 to 400
K, with a step of 10 K. Then the heat capacity is computed for each temeprature.

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