Nicolas Léonard Sadi Carnot: Body

Nicolas Léonard Sadi Carnot was French physicist, the "father of thermodynamics" (1796–1832). Explore interesting quotes on body.
Nicolas Léonard Sadi Carnot: 38   quotes 2   likes

“We shall have [a complete theory] only when the laws of Physics shall be extended enough, generalized enough, to make known beforehand all the effects of heat acting in a determined manner on any body.”

Nicolas Léonard Sadi Carnot

p, 125
Reflections on the Motive Power of Heat (1824)

Law

“[I]f we should find about us only bodies as hot as our furnaces, how can we condense steam? What should we do with it if once produced?”

Nicolas Léonard Sadi Carnot

p, 125
Reflections on the Motive Power of Heat (1824)

“[W]hen a body has experienced any changes, and when after a certain number of transformations it returns to precisely its original state, that is, to that state considered in respect to density, to temperature, to mode of aggregation—let us suppose, I say, that this body is found to contain the same quantity of heat that it contained at first, or else that the quantities of heat absorbed or set free in these different transformations are exactly compensated. This fact has never been called in question. It was first admitted without reflection, and verified afterwards in many cases by experiments with the calorimeter. To deny it would be to overthrow the whole theory of heat to which it serves as a basis. For the rest, we may say in passing, the main principles on which the theory of heat rests require the most careful examination. Many experimental facts appear almost inexplicable in the present state of this theory.”

Nicolas Léonard Sadi Carnot

Reflections on the Motive Power of Heat (1824)

Question , Appearance , Change

“[W]e have just described the re-establishment of equilibrium in the caloric, its passage from a… heated body to a cooler one.”

Nicolas Léonard Sadi Carnot

p, 125
Reflections on the Motive Power of Heat (1824)

“The production of motion in steam-engines is always accompanied by… the re-establishing of equilibrium in the caloric; that is, its passage from a body in which the temperature is more or less elevated, to another in which it is lower.”

Nicolas Léonard Sadi Carnot

p, 125
Reflections on the Motive Power of Heat (1824)

“Heat can evidently be a cause of motion only by virtue of the changes of volume or of form which it produces in bodies.”

Nicolas Léonard Sadi Carnot

p, 125
Reflections on the Motive Power of Heat (1824)

Change

“The production of motive power is then due… not to an actual consumption of caloric, but to its transportation from a warm body to a cold body… to its re-establishment of equilibrium…”

Nicolas Léonard Sadi Carnot

p, 125
Reflections on the Motive Power of Heat (1824)

Motivation