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Topic: Le second principe de la thermodynamique veut que l'entropie de l'univers augmente.
Posted by: Lalline at ven. 21 oct. 2005 19:13:21

Keywords: orpheus ce soir, bruxelles interforumiste demain aprèm, jeux de plateau demain soir, repas familial en Ardennes dimanche, et je suis déjà claquée. :o)

Message:

Il a pour conséquence qu'il n'y pas pas moyen de récupérer toute l'énergie qui est partie sous forme de chaleur (car cela aurait pour conséquence de diminuer l'entropie de l'univers).

Simplement, la chaleur est de l'énergie de mouvement des molécules (agitation thermique, ça s'appelle et c'est un mouvement dans tous les sens) et ce n'est pas possible de faire déscélérer toutes les molécules pour récupérer leur énergie de mouvement.

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