a name taken from ancient Greek, entropy: I prefer to take the names of important scientific quantities from ancient languages, so that they may be the same in all the living languages. I therefore propose to call entropy the quantity (S) of a body, from the Greek word for transformation: ἡ τροπή.6 Clausius’s entropy, indicated by the letter S, is a measurable and calculable7 quantity that increases or remains the same but never decreases, in an isolated process.
Entropy
