The Annual of Scientific Discovery, Or, Year-book of Facts in Science and Art, Volumen7Gould, Kendall, and Lincoln, 1856 |
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Página 29
... rocks , or ice- bergs , the strain would fall upon the very strongest material within the structure . The plates or outer planking of the ship , so to speak , are laid alternately , so that one adds strength to the other , and they form ...
... rocks , or ice- bergs , the strain would fall upon the very strongest material within the structure . The plates or outer planking of the ship , so to speak , are laid alternately , so that one adds strength to the other , and they form ...
Página 34
... rocks . In short , the present anchor is a compromise be- tween the forms best adapted to a rocky or tough clayey bottom and that best formed to hold in a loose and treacherous earth . Mr. De Guinon's inven- tion makes the anchor ...
... rocks . In short , the present anchor is a compromise be- tween the forms best adapted to a rocky or tough clayey bottom and that best formed to hold in a loose and treacherous earth . Mr. De Guinon's inven- tion makes the anchor ...
Página 48
... rocks they had to cut through where they traverse that State along the jagged points of rocks that jut into the Delaware river . Almost equally hard was the restriction placed upon the Company by the Legislature of New York , by which ...
... rocks they had to cut through where they traverse that State along the jagged points of rocks that jut into the Delaware river . Almost equally hard was the restriction placed upon the Company by the Legislature of New York , by which ...
Página 87
... picks cut grooves in the rock to the depth required , and then the slate comes off in thin layers the size of the space between the cut grooves , forming rectangular slabs . To supersede this slow method of MECHANICS AND USEFUL ARTS . 87.
... picks cut grooves in the rock to the depth required , and then the slate comes off in thin layers the size of the space between the cut grooves , forming rectangular slabs . To supersede this slow method of MECHANICS AND USEFUL ARTS . 87.
Página 88
... rock is so grooved that the space between the side and two end grooves or cut channels , forms a slab of the size desired ... rocks , recently patented by Capt . C. F. Brown , of Warren , R. I. , consists in placing the powder or charge ...
... rock is so grooved that the space between the side and two end grooves or cut channels , forms a slab of the size desired ... rocks , recently patented by Capt . C. F. Brown , of Warren , R. I. , consists in placing the powder or charge ...
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Página 161 - That gravity should be innate, inherent, and essential to matter, so that one body may act upon another at a distance through a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to another, is to me so great an absurdity, that I believe no man, who has in philosophical matters a competent faculty of thinking, can ever fall into it.
Página 1 - WASHINGTON STREET, BOSTON, ANNUAL OF SCIENTIFIC DISCOVERY ; or, Year Book of Facts in Science and Art, exhibiting the most important Discoveries and Improvements in Mechanics, Useful Arts, Natural Philosophy, Chemistry, Astronomy, Meteorology, Zoology, Botany, Mineralogy, Geology, Geography, Antiquities, etc.
Página 162 - ... suspended, ie rendered existent without action or without its equivalent action. The conservation of power is now a thought deeply impressed upon the minds of philosophic men ; and I think that, as a body, they admit that the creation or annihilation of force is equally impossible with the creation or annihilation of matter. But if we conceive the sun existing alone in space, exerting no force of gravitation exterior to it; and then- conceive another sphere in space having like conditions, and...
Página 163 - The third sub-case remains, namely, that the power is always existing around the sun and through infinite space, whether secondary bodies be there to be acted upon by gravitation or not: and not only around the sun, but around every particle of matter which has existence. This case of a constant necessary condition to action in space, when as respects the sun the earth is not in place, and of a certain gravitating action as the result of that previous condition when the earth...
Página 163 - Trans. 1851, p. 1) ; but the results were entirely negative. The view, if held for a moment, would imply that not merely the sun, but all matter, whatever its state, would have extra powers set up in it, if removed in any degree from gravitation; that the particles of a comet at its perihelion would have changed in character, by the conversion of some portion of their molecular force into the increased amount of gravitating...