The Annual of Scientific Discovery, Or, Year-book of Facts in Science and Art, Volumen7Gould, Kendall, and Lincoln, 1856 |
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Página 18
... surface , and perchance the display of some of the dark worlds of Bessel , might be the revelations of a moment , and would amply repay in national glory the transportation of a huge telescope to the shoulder or to the summit of a lofty ...
... surface , and perchance the display of some of the dark worlds of Bessel , might be the revelations of a moment , and would amply repay in national glory the transportation of a huge telescope to the shoulder or to the summit of a lofty ...
Página 25
... surface printing by machinery . For a means of producing impressions from copper - plates by machinery , without the intervention of hand labor . For the invention of a simple electrometer , to be sold at a moderate price , for ...
... surface printing by machinery . For a means of producing impressions from copper - plates by machinery , without the intervention of hand labor . For the invention of a simple electrometer , to be sold at a moderate price , for ...
Página 30
... surface for atmospheric resistance . Her dimensions , as completed , are 222 feet on the load line , 225 feet on deck , 36 feet 10 inches beam , and 22 feet hold , or 7 feet deeper than her hull was designed for . The machinery is ...
... surface for atmospheric resistance . Her dimensions , as completed , are 222 feet on the load line , 225 feet on deck , 36 feet 10 inches beam , and 22 feet hold , or 7 feet deeper than her hull was designed for . The machinery is ...
Página 32
... surface , is fixed in the vessel in such position that the gear - wheel shall always mesh into and travel around within it . The proportion of the parts may be modified so that the propeller shaft shall be compelled to revolve as much ...
... surface , is fixed in the vessel in such position that the gear - wheel shall always mesh into and travel around within it . The proportion of the parts may be modified so that the propeller shaft shall be compelled to revolve as much ...
Página 35
... surface of the shaft . The fixed rubbing surfaces of the bearing are composed of strips or segments of lignum vitae , or other hard wood . These segments of wood are fitted into dove - tail grooves in the casing , and small spaces are ...
... surface of the shaft . The fixed rubbing surfaces of the bearing are composed of strips or segments of lignum vitae , or other hard wood . These segments of wood are fitted into dove - tail grooves in the casing , and small spaces are ...
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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
Pasajes populares
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...