Estimate the mean free path of phonons in germanium at a temperature of 300 K, using the following data: Debye temperature of germanium Q = 360 K, thermal conductivity coefficient c = 80 W/(m•K), atomic weight equal to 72.6, density p = 5500 kg/ m3, average speed of sound s = 4500 m/s. Assume that heat transfer is carried out only by phonons.
Answer. Format gif
No feedback yet