Reading about einstein's model of a solid as being made up by quantum harmonic oscillators. Now while the idea is VERY interesting, I think my book's explanation of the multiplicity of an energy state is quite flawed. One can easily derive a simple formula using the binomial coefficient. However, as far as I can see the multiplicity of an energy state tends to increase as the total energy tends to inifinity. But surely that is nonsense, because the multiplicity must somehow be limited by the total energy in the system as a whole. Why does it even make sense to calculate the multiplicty of different amounts of total energy, when there is always ONE total amount of energy, that can't change. Maybe I should have continued to the next pages before asking this question though..