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Macroscopic motion and gravitation in thermodynamics
Sanmartín Losada, Juan Ramón
Macroscopic motion and gravitation in thermodynamics.
"European journal of physcis", v. 16
A series of examples rarely presented to students is discussed to illustrate a property of thermodynamic
equilibrium: small parts of a fully isolated system move as if points of a rigid body, so as to minimize the macroscopic
(kinetic) energy EM. Most examples lie in the fields of
astronomy and astrophysics, EM then including the
gravitational energy. The paradoxical behaviour of
gravitation, in particular in the extreme case of black holes,is discussed.
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