Debye approximation.

CF.Gauss

Diamond has a Debye temperature of Dt = 2000 K and a density of 3500 kg/m3.
The distance between nearest neighbors is 0.15 nm. Determine the velocity of
sound using the Debye approximation.

I have no idea where to even start with this question. Most books dont even mention the Debye approx. and all the others have very little or are so confusing!

Wolfgang2b

Refer http://en.wikipedia.org/wiki/Debye_model

There is a formula in there, that connects all the given parameters with the sound velocity. You can also follow the derivation.

Of course to understand more, you might have to refer to some book such as Kittel.

Similar Threads for: Debye approximation.
Thread	Forum	Replies
Approximation theory problem: show nonexistence of best approximation	Calculus & Beyond Homework	0
born oppenheimer approximation vs adiabatic approximation	Quantum Physics	4
Debye length?	Astrophysics	6
What are Debye potentials?	General Physics	6
the debye frequency	Advanced Physics Homework	3

CF.Gauss	Debye approximation. Tweet Diamond has a Debye temperature of Dt = 2000 K and a density of 3500 kg/m3. The distance between nearest neighbors is 0.15 nm. Determine the velocity of sound using the Debye approximation. I have no idea where to even start with this question. Most books dont even mention the Debye approx. and all the others have very little or are so confusing!

Wolfgang2b	Refer http://en.wikipedia.org/wiki/Debye_model There is a formula in there, that connects all the given parameters with the sound velocity. You can also follow the derivation. Of course to understand more, you might have to refer to some book such as Kittel.