Entropy, Temperature and Heat
– Qualitative definition of temperature in terms of equilibrium,
and formal definition 1/T = (∂S/∂U)V, N .
– Calculating T as a function of U for simple systems.
– Calculating the heat capacity CV as
a function of T for a microscopic
model.
– Situations in which T < 0, how to tell from S(U)
and physical
meaning.
– Situations in which CV < 0,
how to tell from S(U) and physical meaning.
Thermodynamical Entropy and the Third Law
– Finding entropy changes from dS = dU/T for
processes with vanishing work, and
ΔS = ∫ CV dT/T.
– The third law of thermodynamics; Vanishing of CV at
T = 0 and integration of S.
– Limits to the validity of the third law, and origin of residual
entropy at T = 0.
Paramagnetism
– Basic definitions, expressions of U and M interms of numbers of "up"
spins.
– Multiplicity of microstates Ω(n).
– Be able to calculate and plot the entropy as a function of U from Ω(n).
– Be able to calculate and plot T as a function of U.
– Be able to calculate and plot CV as
a function of T.
Mechanical Equilibrium and Pressure
– Not covered yet.
Diffusive Equilibrium and Chemical Potential
– Not covered yet. |