(communication theory) a numerical measure of the uncertainty of an outcome; "the signal contained thousands of bits of information" 結果の不確かさの数量的大きさ。
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(thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work; "entropy increases as matter and energy in the universe degrade to an ultimate state of inert uniformity" ある組織において、力学的仕事を行う場合に利用できる最大のエネルギー量を表す熱力学量。
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