Ergodic hypothesis

（重定向自Ergodic principle）

The question of ergodicity in a perfectly collisionless ideal gas with specular reflections.

This device can trap fruit flies, but if it trapped atoms when placed in gas that already uniformly fills the available phase space, then both Liouville's theorem and the second law of thermodynamics would be violated.

In physics and thermodynamics, the ergodic hypothesis says that, over long periods of time, the time spent by a system in some region of the phase space of microstates with the same energy is proportional to the volume of this region, i.e., that all accessible microstates are equiprobable over a long period of time.

单词	Ergodic principle
释义	Ergodic principle 英语百科 Ergodic hypothesis （重定向自Ergodic principle） In physics and thermodynamics, the ergodic hypothesis says that, over long periods of time, the time spent by a system in some region of the phase space of microstates with the same energy is proportional to the volume of this region, i.e., that all accessible microstates are equiprobable over a long period of time.
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