Question: A refinement of the Einstein model by Debye resulted in the following expression for the specific heat: where TD is called the Debye temperature and

A refinement of the Einstein model by Debye resulted in the following expression for the specific heat:

x*e" c = 9R (e* -1) dp.

where TD is called the Debye temperature and y = TD / T.

Show that when T?>> TD, the above expression reduces to the Dulong?Petit result cv = 3R.

x*e" c = 9R (e* -1) dp.

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