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The Principles of Thermodynamics
book

The Principles of Thermodynamics

by N.D. Hari Dass
October 2013
Intermediate to advanced content levelIntermediate to advanced
352 pages
13h 56m
English
CRC Press
Content preview from The Principles of Thermodynamics
304 The Principles of Thermodynamics
it is easy to see that entropy at all temperatures, according to Debye theory, is given
by
S(T)=3R{4
T
3
Θ
3
Θ
T
0
dx
x
3
e
x
1
ln(1 e
Θ
T
)} (15.22)
It is straightforward to work out the high temperature behaviour of the Debye entropy
now:
S(T ) 3R ln T +4R 3R ln Θ (15.23)
This explicit example clearly demonstrates how the Nernst-Planck theorem, namely
the requirement of vanishing entropy at absolute zero, xes the entropy constant.
In gure 15.1, a comparison is made between the specic heat of solid silver as
predicted by the Debye theory and experimental data for silver. Clearly, the agree-
ment is very good.
Now we carry ...
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Publisher Resources

ISBN: 9781466512085