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

...conclusion that Eumford had drawn from his own results, and expressed himself in very similar terms: — "The immediate cause of the phenomena of heat then...communication are precisely the same as the laws of the communicat ion of motion." (Elements tif Chi-mical Philosophy, London, 1812, pp. 94, 95.) Similar views...

...for the first time clearly stated the conclusion that " the immediate cause of the phenomena of heat is motion, and the laws of its communication are precisely the same as those of the communication of motion." Dr. Youmans, with admirable distinctness of statement and with...

...published. In fact, in 1812 he enounces this proposition : — ' The immediate cause of the phenomenon of heat, then, is motion, and the laws of its communication...same as the laws of the communication of motion.' Now, we see at a glance to what an immense extent the science had been advanced in Davy's time. When...

...them ; and then he stated in a distinct form the important propositions that heat is motion, and that the laws of its communication are precisely the same as the laws of communication of motion. Then I showed you that Seguin, although he was altogether wrong in his a priori...

...following perfectly definite and most important proposition : — '7%e immediate cause of the phenomenon of heat, then, is motion, and the laws of its communication...precisely the same as the laws of the communication of motion.1 The immense consequences of this statement we shall presently consider, after we have briefly...

...the ice itself. Hence Davy* drew the conclusion that, "the immediate cause of the phenomena of heat is motion, and the laws of its communication are precisely...same as the laws of the communication of motion." Heat was compared by these philosophers to a material substance, in order to explain its then known...

...stated plainly and precisely the real nature of heat, saying : " The immediate cause of the phenomenon of heat, then, is motion, and the laws of its communication...same as the laws of the communication of motion." The basis of this opinion was the same that had previously been noted by Rumford. So much having been...

...engines. It is expressed in the following sentence: — ' The immediate cause of the phenomenon of heat is motion, and the laws of its communication are precisely...same as the laws of the communication of motion.' HEAT IS PRODUCED BY THE AGITATION OF THE MOLECULES OF BODIES. 33. After the experiments of Rumford...

...equally evident that its parts must have separated from each other. The immediate cause of the phenomenon of heat, then, is motion ; and the laws of its communication...motion. " Since all matter may be made to fill a smaller space by cooling, it is evident that the particles of matter must have space between them ; and, since...