2.1 Heat Capacity

Question 1

Describe the classical approach for the heat capacity

Answer 1

That C = 3k_B per atom

Question 2

How good is the classical approach for heat capacity?

Answer 2

Good for room temperature for most materials, but not for low temperatures

Question 3

Describe the Einstein model for heat capacity

Answer 3

Uses the expected energy for a harmonic oscillator with the probability that the system will be in each energy level

Question 4

Describe the Debye Model for heat capacity

Answer 4

At low temperatures, C ∝ T^3

Question 5

Describe the difference between teh Debye model and Einstein model for low temperatures

Answer 5

Einstein has an exponential factor, Debye has C ∝ T^3