The Annual of Scientific Discovery, Or, Year-book of Facts in Science and Art, Volumen7Gould, Kendall, and Lincoln, 1856 |
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Página 16
... distance of the halves of the object - glass will be the measure of the angular distance of the two stars . The same instru- ment may be applied , as its name indicates , to the sun . Its range is only about a degree . The construction ...
... distance of the halves of the object - glass will be the measure of the angular distance of the two stars . The same instru- ment may be applied , as its name indicates , to the sun . Its range is only about a degree . The construction ...
Página 21
... distance from the mouth of the river , as the spot where , according to their instructions , they were to commence minute exploration . From this time until the 9th of August , the party were industriously engaged in searches on the ...
... distance from the mouth of the river , as the spot where , according to their instructions , they were to commence minute exploration . From this time until the 9th of August , the party were industriously engaged in searches on the ...
Página 26
... distance between the top of the arch of the tunnel will be less than 27 yards , so that all danger of the ocean breaking through will be avoided by this enormous thickness of what may be called the wall of the tunnel . This tunnel will ...
... distance between the top of the arch of the tunnel will be less than 27 yards , so that all danger of the ocean breaking through will be avoided by this enormous thickness of what may be called the wall of the tunnel . This tunnel will ...
Página 32
... distance , secured by bolts and nuts into suitable grooves , in which the curved blades - four in number - are fixed . These blades are made of plate - iron , formed to take as much purchase in the water as will have the maximum effect ...
... distance , secured by bolts and nuts into suitable grooves , in which the curved blades - four in number - are fixed . These blades are made of plate - iron , formed to take as much purchase in the water as will have the maximum effect ...
Página 34
... distance of 37 geographical miles . These passages were made in fine weather - light breezes and a smooth sca - and the dip of the paddles was about equal in all cases . Eight passages were made with the usual number of paddles - 21 ...
... distance of 37 geographical miles . These passages were made in fine weather - light breezes and a smooth sca - and the dip of the paddles was about equal in all cases . Eight passages were made with the usual number of paddles - 21 ...
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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...