of: a system
means: that no net transfer of heat is taking place. [P7.2, P7.3]
justifies: the introduction of temperature and thermometry. We say that if two bodies (one of which might be a thermometer) are in thermal equilibrium then they are at the same temperature. [P7.2, P7.3]
can be recognized: by the constancy of its thermal properties and the uniformity of its temperature.. [P7.2, P7.3]
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