...placed before the Drummond light, when the line D is no longer dark hut bright. In fact, the law, " the absorption of a particle is equal to its radiation, and that for every kind of light," only applies to the case where the temperature of the particle is equal to that of...

...parts give out much more light than the white, thereby producing a curious reversal of the pattern. All these facts are comprehended in the statement...radiation, and that for every description of light. It was also noticed that all coloured glasses ultimately lose their colour in the fire as they approach...

...parts give out much more light than the white, thereby producing a curious reversal of the pattern. All these facts are comprehended in the statement...temperature the absorption of a particle is equal to it» radiation, and that for every description of light. It was also noticed that all coloured glasses...

...in the impact of elastic bodies. He also considers that the law which is expressed by saying " That the absorption of a particle is equal to its radiation, and that for every description of heat," expresses another law of action and reaction which holds when the motion which constitutes radiant...

...schliefst: » We have, therefore, two laws necessary to the equilibrium of temperature, — 1", That the absorption of a particle is equal to its radiation , and that for every description of heat; 1", That the flow of heat from the interior upon the surface of a substance of indefinite thickness...

...schliefst: » We havc, thereforc, two laws necessary to the eaiulibrium of temperature, — 1", Titat the absorption of a particle is equal to its radiation, and that for every description of /•<•<:/; 2J, That the flow of heat from the inferior upon the surface of a substance of indefinite...

...mention of his researches till I come to the subject of iines in the spectrum. " In February iS6o, I communicated to the Royal Society of London a paper...Strontia, and added the following characteristic remark : — '' / hesitate not to say that optical analysis can dislinyuish the minutest portion of these...

...makes up for that which it absorbs, so that we have virtually a coal radiation coming (mrth ,//•«/« and partly through the glass. " All these facts are...following characteristic remark : — " I hesitate not to tay that optical ti, in lysis can distinguish the minutest portion of these two substances [Lithia...

...parts give out much more light than the white, thereby producing a curious reversal of the pattern. "All these facts are comprehended in the statement...radiation, and that for every description of light. "It was also noticed that all coloured glasses ultimately lose their colour in the fire, as they approach...

...reversal of the pattern. " AH these facts are comprehended in the statement that in a con • stant temperature the absorption of a particle is equal...radiation, and that for every description of light "It was also noticed that all coloured glasses ultimately lose their colour in the fire, as they approach...