Enigme: exorcisons le démon de Maxwell

[Tropique]

Hello

Arriverez-vous à trouver pourquoi ça ne marcherait pas?

Diamond has a negative electron work function into vacuum. Tungsten
has a positive electron work function, 4.6 eV, into vacuum. One need
only oppose a diamond point anode and a tungsten cathode in vacuum for
a spontaneous current to flow. The diamond cools from electron
evaporation as the tungsten heats from electron impact. Extract
energy from the spontaneous current flow while using the temp gradient
to drive a Peltier effect generator in the other direction. Infinite
energy is extracted from an otherwise closed system.

Find the fallacy. (If you don't like diamond, cesium has the lowest
positive work function.)

Source: groupsrv sci physics
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[chaverondier]

Diamond has a negative electron work function into vacuum. Tungsten has a positive electron work function, 4.6 eV, into vacuum. One need only oppose a diamond point anode and a tungsten cathode in vacuum for a spontaneous current to flow. The diamond cools from electron evaporation as the tungsten heats from electron impact. Extract energy from the spontaneous current flow while using the temp gradient to drive a Peltier effect generator in the other direction. Infinite energy is extracted from an otherwise closed system. Find the fallacy. (If you don't like diamond, cesium has the lowest positive work function.)

Hello. Arriverez-vous à trouver pourquoi ça ne marcherait pas? Source: groupsrv sci physics

Non parce que je n'y ai rien compris.

Cela dit un système qui serait capable de jouer le rôle de démon de Maxwell, c'est un système qui, d'une façon ou d'une autre, pour une raison ou pour une autre, saurait prélever de l'information avec un rendement supérieur à ce que nous savons faire de mieux d'après le second principe de la thermodynamique. Est-ce vraiment possible ? J'en doute, mais sait-on jamais ?