In thermodynamics,

The term and logic behind the term were developed in 1854 by German physicist Rudolf Clausius, which is a precursory synonym for the 1865 quantity of entropy, being built on the phenomenon of the mechanical equivalent of heat in relation to its effect inside of working body during a cycle. [2]

See also

● Transformation-equivalents

References

1. Clausius, R. (1865).

2. Clausius, R. (1854). “On a Modified form of the Second Fundamental Theorem in the Mechanical Theory of Heat”, Poggendoff’s

**equivalence-value**, from the German*Aequivalenzwerth*, is the mathematical value of a transformation, of heat into work or work into heat, defined by the ratio of the quantity of heat Q, interring or leaving a system, and the absolute temperature T of the surface of system, where the heat enters or leaves: [1]The term and logic behind the term were developed in 1854 by German physicist Rudolf Clausius, which is a precursory synonym for the 1865 quantity of entropy, being built on the phenomenon of the mechanical equivalent of heat in relation to its effect inside of working body during a cycle. [2]

See also

● Transformation-equivalents

References

1. Clausius, R. (1865).

*The Mechanical Theory of Heat**– with its Applications to the Steam Engine and to Physical Properties of Bodies*, (pgs. 121-27)*(Forth Memoir). London: John van Voorst, 1 Paternoster Row. MDCCCLXVII.*2. Clausius, R. (1854). “On a Modified form of the Second Fundamental Theorem in the Mechanical Theory of Heat”, Poggendoff’s

*Annalen,*December. Vol. xciii. p. 481; translated in the*Journal de Mathematiques,*vol. xx. Paris, 1855, and in the*Philosophical Magazine*, August 1856, S. 4. Vol. xii. p. 81.