entropy

Term: entropy

Literally meaning: “a turning, transformation”

Origin: Anc Greek

εν-/en-(=in)

+τροπή/tropi(=turn, convert)

Coined/History
The term was coined in 1865 by the German physicist Rudolf Clausius (1822-1888), reffering  the transformation of energy in a system to useful work

Definition

Entropy is a thermodynamic quantity of energy which describes the spontaneous process through atoms and molecules become more spread. The greater the entropy, the less available the useful energy . In a modern concept  the entropy is the degree of uncertainty in a system. Later the concept of entropy passed in mathematics where expressed the degree of uncertainty in a closed system of information.