© 2001 Atkinsopht (12/20/12)

Picture courtesy Fondation Carnot.
Sadi Carnot

An Historical Note*

"Economy of fuel is only one of the conditions a heat engine must satisfy; in many cases it is only secondary, and must often give way to consider-ations of safety, strength and wearing qualities of the machine, of smallness of space occupied, or of expense in erecting. To know how to appreciate justly in each case the considerations of convenience and economy, to be able to distinguish the essential from the accessory, to balance all fairly, and finally to arrive at the best result by the simplest means, such must be the principal talent of the man called on to direct and co-ordinate the work of his fellows for the attainment of a useful object of any kind."

S. Carnot

Sadi Carnot. Reflections on the Motive Power of Heat, Chez Bachelier, Libraire, Paris, 1824

* Translation by R.H. Thurston, Cornell University, First President, A.S.M.E.

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