..."On the Mechanical Equivalent of Heat," Joule concluded from this experiment "[tjhat the quantity of heat produced by the friction of bodies, whether solid...liquid, is always proportional to the quantity of [energy] expended." Heat, then, as Joule was able to establish, is a form of energy, contrary to the...

...quantitative results in 1849. As expressed in modern terms and units, they are as follows: • The quantity of heat produced by the friction of bodies, whether solid...liquid, is always proportional to the quantity of energy expended. chanical energy represented by the fall of a weight of 4180 N through the distance...

...reliably measured. Joule's own conclusions from this type of experiments are: 1st. That the quantity of heat produced by the friction of bodies, whether solid...liquid, is always proportional to the quantity of force expanded; 2nd. That the quantity of heat capable of increasing the temperature of a pound of...

...ingenious and marvelously accurate experiments have been summarized into two points: The quantity of heat produced by the friction of bodies, whether solid...or liquid is always proportional to the quantity of force expended. The quantity of heat capable of increasing the temperature of a pound of water by 1°...

...(5) friction of cast-iron, two series. From all these he concludes : — " (i) That the quantity of heat produced by the friction of bodies, -whether...or liquid, is always proportional to the quantity offeree expended; and " (2) That the quantity of heat capable of increasing the temperature of a pound...