Theory of Heat Quotes
Physics books
Top Quotes
“Thermodynamics”
“James Clerk Maxwell”
“[A]ll hot bodies emit radiation.”
“[T]he theory of heat as a form of energy is called Thermodynamics.”
“[I]t is only when the radiation is stopped that it has any effect in heating what it falls on.”
“Conduction is the flow of heat through an unequally heated body from places of higher to places of lower temperature.”
“Theory of Heat (1871) by James Clerk Maxwell”
“Any substance in which an increase of temperature, however small, produces an increase of volume may be used to indicate changes of temperature.”
“[T]he thermo-electric properties of metals, and the variation of their electric resistance with temperature, are also employed in researches on heat.”
“[T]he amount of heat transferred from the hotter to the colder body is invariably greater than the amount, if any, transferred from the colder to the hotter.”
“The aim of this book is to exhibit the scientific connexion of the various steps by which our knowledge of the phenomena of heat has been extended.”
“The term convection is applied to those processes by which the diffusion of heat is rendered more rapid by the motion of the hot substance from one place to another...”
“[T]he word caloric... soon came to imply the... existence of something material, though probably of a more subtle nature than the then newly discovered gases.”
“Heat... is something which may be transferred from one body to another, so as to diminish the quantity of heat in the first and increase that in the second by the same amount.”
“[T]hough we admit heat to the title of a measurable quantity, we must not give it rank as a substance, but must hold our minds in suspense till we have further evidence...”
“[W]e prefer to form our estimate of the state of bodies from their observed action on some apparatus whose conditions are more simple and less variable than those of our own senses.”
“[O]ur eyes are sensitive only to particular kinds of rays... coming from some very hot body... directly or after reflexion or scattering at the surface of other bodies.”
“The last chapter is devoted to the explanation of various phenomena by means of the hypothesis that bodies consist of molecules, the motion of which constitutes the heat of those bodies.”
“[T]ake a thermometer with a large bulb... and dash a little hot water over the bulb. The fluid will fall in the tube before it begins to rise, showing that the bulb began to expand before the fluid expanded.”