出典:Wiktionary
“This term was suggested by W. V. Quine in discussions following this symposium[1]: Entropy, he pointed out, is Greek for turning in; the opposite term should therefore be the Greek for turning out, namely ectropy. Since the coaction cardioid literally turns in and out of the circle of reference, his short, elegant term is used throughout.”[2][3]
ectropy (countable かつ uncountable, 複数形 ectropies)
出典:Wikipedia
出典:『Wikipedia』 (2010/07/12 12:18 UTC 版)
In thermodynamics, ectropy is a measure of the tendency of a dynamical system to do useful work and grow more organized. Ectropy, in a loose sense, can be thought of as the opposite of entropy. Ectropy is minus entropy. That is, instead of saying "lose entropy" you can say "gain ectropy", instead of saying "gain entropy" you can say "lose ectropy".