00394    a2200121   4500020001500000082001500015100002500030245012500055260004400180300001500224650001200239650002100251  a0335162029  a530.4bOPE  aThe Open university   aThe physics of matterbunit 4 the Boltzmann factor - sharing out the energy, unit 5 block 1 revision and consolidation    aKeynesbThe Open Universityc1989g1991  a22p.c29cm  aPhysics  aStates of matter