New trends in physics teaching, v.4; The ... - unesdoc - Unesco

Introductory statistical physics
for the total number of microstates of N oscillators sharing q quanta. Now the unit change
method gives, if one quantum is added, a multiplier of (N+q) and a divider of (q+l). As q+l x q
this at once gives (N+q)/q for the factor multiplying S2 when one quantum is added, or dividing
it when one is taken away. As argued before, the multiplying factor is much simpler than the
thing it multiplies.
E xponenti a I
Reversible and Chance
atmosphere ir reversi ble State, distribution
Boltzmann
processes
factor
Random motion
chance
Diffusion
2N
Isothermal
expansion
Aln n=Nln2
AS=NkTbInV
Uses of Boltzmann
vapour pressure
therm ionic emission
conduction
rate of reaction
ionization
melting. evaporation
Figure 8. Bent’s method.
Bent has previously introducedS= k In S2, by announcement, not argument. Also he has defined
T = dU/dS at constant volume
so that when one quantum of energy E is transferred,
169