 | 1864 - عدد الصفحات: 752
...expended in the process. - He did the same with various other substances. These experiments indicate that the quantity of heat generated by the same amount of force is fixed and invariable ; and it has been concluded that the quantity of heat which would raise one pound of water one degree... | |
 | John Tyndall - 1863 - عدد الصفحات: 538
...expended in overcoming it. He also urged water through capillary tubes, and determined the amount of heat generated by the friction of the liquid against the...invariable. A given amount of force, in causing the iron disks to rotate against each other, produced precisely the same amount of heat, as when it was applied... | |
 | John Tyndall - 1863 - عدد الصفحات: 500
...expended in overcoming it. He also urged water through capillary tubes, and determined the amount of heat generated by the friction of the liquid against the...invariable. A given amount of force, in causing the iron disks to rotate against each other, produced precisely the same amount of heat, as when it was applied... | |
 | John Tyndall - 1866 - عدد الصفحات: 492
...expended in overcoming it. He also urged water through capillary tubes, and determined the amount of heat generated by the friction of the liquid against the...invariable. A given amount of force, in causing the iron disks to rotate against each other, produced precisely the same amount of heat, as when it was applied... | |
 | David Thomas Ansted - 1867 - عدد الصفحات: 522
...result and following the same law that motion and heat are convertible. It may be regarded as certain that, under all circumstances, the quantity of heat...the same amount of force is fixed and invariable. Thus, the quantity of heat that would raise one pound of water 1° F. in temperature, is exactly equal... | |
 | Academy of Science of St. Louis - 1868 - عدد الصفحات: 664
...produced, and the heat produced is the measure of the force expended in overcoming the friction. " The quantity of heat generated by the same amount of force is fixed and invariable. Vice versa, heat is thus converted into mechanical energy. " The grand principle of conservation of... | |
 | John Tyndall - 1868 - عدد الصفحات: 560
...expended in overcoming it. He urged water through capillary tubes, and determined the amount of heat generated by the friction of the liquid against the sides of the tubes. And his experiments leave * Liebig's Annalen, vol. xlii. p. 233 ; Phil. Mag. 4th Series, vol. xxiv. p.... | |
 | Le Roy Clark Cooley - 1869 - عدد الصفحات: 246
...Ibs. falling 1 foot, is called the mechanical equivalent of heat. Under all circumstances the amount of heat generated by the same amount of force is fixed and invariable. " A ton of coal, by its combustion, yields a certain definite amount of heat. Let this quantity of coal... | |
 | John Tyndall - 1870 - عدد الصفحات: 576
...expended in overcoming it. He also urged water through capillary tubes, and determined the amount of heat generated by the friction of the liquid against the...quantity of heat generated by the same amount of force is iixed and invariable. A given amount of force, in causing the iron disks to rotate against each other,... | |
 | John Tyndall - 1873 - عدد الصفحات: 582
...Aug. 18G3. Mr. Joule's experiments on the mechanical •quivalcnt of heat extend from 1843 to 1S49. upon the mind that, under all circumstances, the quantity...same amount of force is fixed and invariable. A given expenditure of force, in causing the iron disks to rotate against each other, produced precisely the... | |
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He also urged water through capillary tubes, and determined the amount of heat generated by the friction of the liquid against the sides of the tubes. And the results of his experiments leave no shadow of doubt upon the mind that, under all circumstances,... 
