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phy1004 thermal physics

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<strong>phy1004</strong>W<br />

Thermal Physics<br />

FUNDAMENTAL ASSUMPTION of<br />

STATISTICAL MECHANICS<br />

IG-10<br />

An isolated system is equally likely, over time, to be<br />

found in any one of the fully-specified states<br />

accessible to it.<br />

NB: This assumption allows all possible<br />

configurations of the system (macrostate) if we<br />

observe it for long enough.<br />

However, you might have to wait a very long time to<br />

observe certain configurations<br />

39

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