...of heat was laid down by Davy in his Chemical Philosophy, published in 1812, in the proposition that "The immediate cause of the phenomenon of heat, then,...same as the laws of the communication of motion." The foundations of modern Thermodynamics were first laid down by Sadi Carnot in his essay, Reflexions...

...of heat was laid down by Davy in his Chemical Philosophy, published in 1812, in the proposition that "The immediate cause of the phenomenon of heat, then,...same as the laws of the communication of motion." The foundations of modern Thermodynamics were first laid down by Sadi Carnot in his essay, Reflexions...

...not until 1812 that he came to the conclusion that ' the immediate cause of the phenomenon of heat is motion, and the laws of its. communication are...same as the laws of the communication of motion.' From data given1 by Rumford, it may be calculated that 940 footpounds of work are necessary to produce...

...until they melted away completely. He concluded that ' 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.' Between 1Я40 and 1843 Joule conclusively established the truth of this theory — the dynamical theory...

...realised the significance of his own contribution, and although in 1812 he did go the length of saying " The immediate cause of the phenomenon of heat, then,...same as the laws of the communication of motion," he never followed the matter up. Neither, indeed, did any one else for some thirty years afterwards....

...heat contained in the water. Hence Davy concludes that ' the immediate cause of the phenomenon of heat is motion, and ' the laws of its communication are...same as the ' laws of the communication of motion.' If, aa it would appear, heat be nothing more than motion, either of the ultimate particles of matter...

...pressure, the importance of his result lay in his comment; The immediate cause of the phenomenon of heat is motion, and the laws of its communication are precisely the same as the communication of the laws of motion.18 The next important advances towards a correct understanding...

...capacities of bodies for heat." It was not, however, till 1812 that he enunciated this proposition : " The immediate cause of the phenomenon of heat then...precisely the same as the laws of the communication of motion1 " ; and, on reflection, it seems extraordinary that the publication of the works of Rumford...

...arrived at the goal which Newton sought and which Rumford nearly reached. He says, " the immediate cause of heat, then, is motion ; and the laws of its communication...same as the laws of the communication of motion." In other words the molecular motion, heat, exactly fulfills the conditions 61 Newton's third law of...

...Principia. So that when Davy experimentally showed that " 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," the dynamical theory of heat was so far completed that it required only a quantitative determination...