...these forces. Sir Humphry Davy says that the immediate cause of the phenomena of heat is motion, and the laws of its communication are precisely the same as the laws of the communication of motion. We know that all molecular motion is accompanied by the evolution of heat...

...reason that Davy drew the inference that " the immediate cause of the phenomena of heat is motion, and the laws of its communication are precisely the same as the laws of the communication of motion"*. The researches of Dulong on the specific heat of elastic fluids were...

...enunciated this proposition :— " The immediate cause of the phenomenon of heat, then, is motion, and the laws of its communication are precisely the same as the laws of the communication of motion." When Davy was in a position to make that statement he had only to take...

...nature of heat, saying, " The immediate cause of the phenomenon of heat, then, is motion ; and tho laws of its communication are precisely the same as the laws of the communication of motion." The basis of this opinion wad the same that hail been noted by Ruml'ord....

...1812, Davy announced the axiom. " The immediate cause of the phenomenon of heat, then, is motion, and the laws of its communication are precisely the same as the laws of the communication of motion." But all the while, as late as 1840, these ideas were laughed at as extravagancies,...

...Hence Davy* drew the conclusion that "the immediate cause of the phenomena of heat is motion, and t lie laws of its communication are precisely the same as the laws of the communication of motion." The mechanical, or dynamical theory, which regarded heat as consisting...

...except motion." Davy defines heat as "a peculiar motion," and in his " Chemical Philosophy" tells us that " the laws of its communication are precisely the same as the laws of the communication of motion." Locke, later on,* insists that " what in our sensation is heat, in the...

...announced the important proposition, that " the immediate cause of the phenomenon of heat is motion, and the laws of its communication are precisely the same as the laws of the communication of motion." Our more extended knowledge enables us to confirm the views expressed...

...hence Davy drew the conclusion that, ' the immediate cause of the phenomena of heat is motion, and the laws of its communication are precisely the same as the laws of motion.' Friction is a source from which, we all know, heat can be procured : we rub our hands together to impart...

...thus states his theory : — ' The immediate cause of the phenomenon of heat, then, is motion, and the laws of its communication are precisely the same as the laws of the communication of motion.' Another way of stating the above is that heat is a form of energy. To...