The Annual of Scientific Discovery, Or, Year-book of Facts in Science and Art, Volumen7Gould, Kendall, and Lincoln, 1856 |
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Página 24
... light colors to be used in enameling or japanning slate or iron , that will stand the action of heat from the fire without blister- ing or discoloration , and be sufficiently hard to resist scratches . For an account of the processes ...
... light colors to be used in enameling or japanning slate or iron , that will stand the action of heat from the fire without blister- ing or discoloration , and be sufficiently hard to resist scratches . For an account of the processes ...
Página 32
... light skeleton frame , forming two wheels , held together by cross - arms at the re- quired distance , secured by bolts and nuts into suitable grooves , in which the curved blades - four in number - are fixed . These blades are made of ...
... light skeleton frame , forming two wheels , held together by cross - arms at the re- quired distance , secured by bolts and nuts into suitable grooves , in which the curved blades - four in number - are fixed . These blades are made of ...
Página 33
... light , and of rapid motion , and that their effect would be increased by their being as deeply immersed as possible . He also recommended the disc screw . Improvements in Masts . - An iron screw - steamer , of 600 tons , recently built ...
... light , and of rapid motion , and that their effect would be increased by their being as deeply immersed as possible . He also recommended the disc screw . Improvements in Masts . - An iron screw - steamer , of 600 tons , recently built ...
Página 34
... light on this very point , and seems to settle the question . The experiments to test the question were made on the U. S. steam frigate Mississippi , during her cruise in the Mediterranean , in the years 1849 , 1850 , and 1851 , under ...
... light on this very point , and seems to settle the question . The experiments to test the question were made on the U. S. steam frigate Mississippi , during her cruise in the Mediterranean , in the years 1849 , 1850 , and 1851 , under ...
Página 57
... light as to be of little moment so far as expense is concerned . The only question on which doubt may be felt is the durability , as each depression of the center of the disk must cause a mo- tion or rubbing of the surfaces at the edges ...
... light as to be of little moment so far as expense is concerned . The only question on which doubt may be felt is the durability , as each depression of the center of the disk must cause a mo- tion or rubbing of the surfaces at the edges ...
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action alkaline American ammonia animals apatite apparatus appears applied arranged body boiler carbonic acid carboniferous cent chloride cholera cloth coal color common connected consists containing copper cretaceous crystals cylinder Daguerreotype deposit diameter distance earth effect electricity employed engine England exhibited experiments fact feet fiber fire fossil glass grains gutta-percha heat hydrochloric acid improvement inches invention iron length light lime machine manganese manufacture mass matter means metal miles mineral minutes motion nitric acid observed obtained operation ordinary oxyd oxygen paper pass patented piece placed plate portion potash pounds present produced Professor quantity recently rocks salt screw side silicate silicium Silurian silver soda solution species specific gravity specimens steam substance sulphate sulphuric acid surface temperature thickness tion tons tube valve vapor vessel weight whole wire wood zinc zodiacal light
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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...