...forces of the body. More especially is this the case when a body changes its condition, that is to say, passes from the solid to the liquid or from the liquid to the gaseous state ; and we may in such cases suppose a very large portion of the heat required to produce this...

...only case where he observed a diminution. This was experimentally demonstrated in regard to liquids. Thus a yellow sodium ray, which had passed through...spaces in the middle of a block of ice. The index of refracción of a mixture is moreover not always the mean of the indices of its constituents. Thus a...

...are further examples of the apparent disappearance of heat when changes of the state of aggregation from the solid to the liquid, or from the liquid to the vaporous state take place : — When solids, such as sugar, salt, or — better — saltpetre, are...

...spar being tho only caso whore a diminution is perceived. The index of refraction ho showed to be moro materially affected when a body passes from the solid...liquid, or from the liquid to the gaseous condition ; and the index of n mixture also, such as alcohol and water, to be, moreover, not always the mean...

...observation. Latent heat always comes into play when a body changes its state of aggregation ; when it passes from the solid to the liquid, or from the liquid to the vaporous or gaseous condition. While the case of water is still fresh in our minds, let us take it...

...quotation thus : " This, however, is merely a confusion of ideas, the fact being that when any substance passes from the solid to the liquid, or from the liquid to the gaseous form, a certain portion of the impressed heat-force is continuously occupied in overcoming molecular...

...thus : — " This, however, is merely a confusion of ideas, the fact being that when any substance passes from the solid to the liquid, or from the liquid to the gaseous form, a certain portion of the impressed heat-force is continuously occupied in overcoming molecular...

...contact with some other solid, with which a new liquid chemical compound ensues. In all eases of change from the solid to the liquid or from the liquid to the solid condition, change of temperature occurs, sometimes to lower and sometimes to higher temperatures;...

...remark, by way of caution, that chemical combination is often accompanied by changes of state, — as from the solid to the liquid, or from the liquid to the solid form, — or by contraction of volume. These changes in some cases increase the heating effect...

...explained that in all changes in the state of aggregation of bodies heat becomes latent or sensible. If a body passes from the solid to the liquid, or from the liquid to the gaseous state, heat becomes latent ; in the inverse process an equal amount of heat becomes sensible. Black...