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" ... time is required to raise it to the same height ; so that, however we may alter, by the interposition of machinery, the intensity of the acting force, still in a certain time, during which the mill-stream furnishes us with a definite quantity of water,... "
The Annual of Scientific Discovery, Or, Year-book of Facts in Science and Art - Page 121
1859
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The Annual of Scientific Discovery, Or, Year-book of Facts in Science and Art

1858 - 448 pages
...a certain definite quantity of work, and no more, can be performed. Our machinery, therefore, lias, in the first place, done nothing more than make use...order to overpower the gravity of the hammer, and tg raise the latter. When it has lifted the hammer to the necessary height, it again liberates it,...
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The Annual of Scientific Discovery, Or, Year-book of Facts in ..., Volume 9

1859 - 448 pages
...in the first place, done nothing more than mnke use of the gravity of the falling water in orderto overpower the gravity of the hammer, and to raise...liberates it, and the' hammer falls upon the metal mats which is pushed beneath it. But why does the falling hammer here exercise a greater force than...
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The Correlation and Conservation of Forces: A Series of Exposition

Edward Livingston Youmans - 1865 - 490 pages
...possible ; but either this heavier hammer is raised to only one tenth of the height, or tenfold tho time is required to raise it to the same height ;...does the falling hammer here exercise a greater force than when it is permitted simply to press with its own weight on the mass of metal ? Why is its power...
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The Correlation and Conservation of Forces: A Series of Expositions, by Prof ...

Edward Livingston Youmans, William Robert Grove - 1865 - 500 pages
...; but either this heavier hammer is raised to only one tenth of the height, or tenfold tho time ifl required to raise it to the same height; so that,...does the falling hammer here exercise a greater force than when it is permitted simply to press with its own weight on the mass of metal ? Why is its power...
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The Correlation and Conservation of Forces: A Series of Expositions, by Prof ...

Edward Livingston Youmans, William Robert Grove - 1865 - 512 pages
...possible ; -but either this heavier hammer is raised to only one tenth of the height, or tenfold tho time is required to raise it to the same height ;...and the hammer falls upon the metal mass which is poshed beneath it. But why does the falling hammer here exercise a greater force than when it is permitted...
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The Correlation and conservation of forces

Edward Livingston Youmans - 1868 - 526 pages
...to only one tenth of the height, or tenfold the time is required to raise it to the same height ; BO that, however we may alter, by the interposition of...does the falling hammer here exercise a greater force than when it is permitted simply to press with its own weight on the mass of metal ? Why is its power...
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Popular lectures on scientific subjects, tr. by E. Atkinson. [1st], Volume 1

Hermann Ludwig F. von Helmholtz - 1873 - 424 pages
...hundredweight might alone be possible ; but either this heavier hammer is raised to only one-tenth of the height, or tenfold the time is required to...does the falling hammer here exercise a greater force than when it is permitted simply to press with its own weight on the mass of metal ? Why is its power...
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Popular Lectures on Scientific Subjects

Hermann von Helmholtz - 1873 - 432 pages
...hundredweight might alone be possible ; but either this heavier hammer is raised to only one-tenth of the height, or tenfold the time is required to...does the falling hammer here exercise a greater force than when it is permitted simply to press with its own weight on the mass of metal ? Why is its power...
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Popular Lectures on Scientific Subjects

Hermann von Helmholtz - 1873 - 432 pages
...hundredweight might alone be possible ; but either this heavier hammer is raised to only one-tenth of the height, or tenfold the time is required to...the hammer falls upon the metal mass which is pushed benea<h it. But why does the falling hammer here exercise a greater force than when it is permitted...
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Popular lectures on scientific subjects, tr. by E. Atkinson. [1st]

Hermann Ludwig F. von Helmholtz - 1881 - 390 pages
...however we may alter, by the interposition of machinery, the intensity of the acting force, «till in a certain time, during which the mill-stream furnishes...does the falling hammer here exercise a greater force than when it is permitted simply to press with its own weight on the mass of metal t Why is its power...
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