English Dictionary

Maxwell's demon

名詞

A hypothetical creature created for a thought experiment. Maxwell’s demon, if it existed, would act as a sort of gate guard by sorting between higher-energy molecules and lower-energy molecules within an enclosed space. Because such a sorting process would tend to decrease entropy, it would violate the second law of thermodynamics.

日本語の意味

思考実験のために考案された仮想的な存在。 / 閉じた空間内で、高エネルギー分子と低エネルギー分子を選別する門番のような役割を持つ。 / この仕分けプロセスによってエントロピーが減少し、熱力学第二法則に反するというパラドックスを示す。

In the lecture, the professor used Maxwell's demon to illustrate how sorting molecules by energy would seem to decrease entropy and challenge the second law of thermodynamics.

講義で教授は、分子をエネルギー別に仕分けることでエントロピーが減少するように見え、熱力学第二法則に反するかのように思えることを示すためにマクスウェルの悪魔を用いた。

意味（1）

A hypothetical creature created for a thought experiment. Maxwell’s demon, if it existed, would act as a sort of gate guard by sorting between higher-energy molecules and lower-energy molecules within an enclosed space. Because such a sorting process would tend to decrease entropy, it would violate the second law of thermodynamics.

She did gather that there were two distinct kinds of this entropy. One having to do with heat-engines, the other to do with communication. The equation for one, back in the ’30's, had looked very like the equation for the other. It was a coincidence. The two fields were entirely unconnected, except at one point: Maxwell's Demon.

Maxwell’s demon （ canonical ）

Maxwell's demons （ plural ）