The solution of the problem 4.68 кр 4 from the problem

The solution of the problem 4.68 кр 4 from the problem

Task 4.68
Find the ratio of the average number of phonons in a crystal that have an energy half as large
Maximum, to the average number of phonons with a maximum energy at a temperature of 300 K. Debaevskaya
The temperature of the crystal is 150 K.

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