 | Walter Libby - 1917 - 326 páginas
...remains to establish its specific differences. This accomplished, we arrive at the definition : Heat is a motion, expansive, restrained, and acting in its strife upon the smaller particles of bodies. Bacon, glancing toward the application of this discovery, adds : " If in any natural body you can excite... | |
 | 1880 - 694 páginas
...cases), but that heat itself, its essence and quiddity, is motion and nothing else." And again : "Heat is a motion, expansive, restrained, and acting in its strife upon the smaller particles of bodies." Again, Count Rumford says heat " cannot be a material substance." And once more to quote an authority... | |
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Heat is a motion, expansive, restrained, and acting in its strife upon the smaller particles of bodies. But the expansion is thus modified ; while it expands all ways, it has at the same time an inclination upwards. And the struggle in the particles is... 
