You don't need the time averaging to prove

送交者: gyro 于 2009-10-28, 21:18:07:

回答: In English 由 gyro 于 2009-10-28, 21:15:36:

that heat energy is independent of frame. When you average over all particles the cross-product terms in the energy expression already vanishes, because of the definition of "center of mass".

所有跟贴:

正对单个粒子只为简单明了，实际上可以对全部粒子取平均，结果是一样的。 (无内容) - Palmetto (0 bytes) 2009-10-28, 21:48:28 (378129)
- “针对...”。实际上这个单个粒子也可以等较为全部粒子合为一个大粒子的行为。 (无内容) - Palmetto (0 bytes) 2009-10-28, 21:58:53 (378134)

加跟贴