Задача id14214
Calculate the thermal conductivity coefficient at T = 1 K of a crystalline rod with a diameter of 3 mm made of synthetic corundum (Al2O3). The speed of sound in corundum is s = 5000 m/s, its density is p = 4000 kg/m3, Debye temperature Q = 1000 K.
Detailed solution. Format gif
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