Sydney Herbert Evershed Quote
In despair, I offer your readers their choice of the following definitions of entropy. My authorities are such books and journals as I have by me at the moment.(a) Entropy is that portion of the intrinsic energy of a system which cannot be converted into work by even a perfect heat engine.—Clausius.(b) Entropy is that portion of the intrinsic energy which can be converted into work by a perfect engine.—Maxwell, following Tait.(c) Entropy is that portion of the intrinsic energy which is not converted into work by our imperfect engines.—Swinburne.(d) Entropy (in a volume of gas) is that which remains constant when heat neither enters nor leaves the gas.—W. Robinson.(e) Entropy may be called the ‘thermal weight’, temperature being called the ‘thermal height.’—Ibid.(f) Entropy is one of the factors of heat, temperature being the other.—Engineering.
In despair, I offer your readers their choice of the following definitions of entropy. My authorities are such books and journals as I have by me at the moment.(a) Entropy is that portion of the intrinsic energy of a system which cannot be converted into work by even a perfect heat engine.—Clausius.(b) Entropy is that portion of the intrinsic energy which can be converted into work by a perfect engine.—Maxwell, following Tait.(c) Entropy is that portion of the intrinsic energy which is not converted into work by our imperfect engines.—Swinburne.(d) Entropy (in a volume of gas) is that which remains constant when heat neither enters nor leaves the gas.—W. Robinson.(e) Entropy may be called the ‘thermal weight’, temperature being called the ‘thermal height.’—Ibid.(f) Entropy is one of the factors of heat, temperature being the other.—Engineering.
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