The Edinburgh New Philosophical Journal, Том 37A. and C. Black, 1844 |
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Страница 23
... side to the other , and the depth about thirty- two feet ; and having repeated a course of similar admeasure- ments below the falls at Queenston , where the current is more placid , and the depth in the deepest place about one hundred ...
... side to the other , and the depth about thirty- two feet ; and having repeated a course of similar admeasure- ments below the falls at Queenston , where the current is more placid , and the depth in the deepest place about one hundred ...
Страница 30
... side of the globe , c d that on the other . If the earth were a perfect sphere , the moon's attraction would have no disturbing effect upon it . And though it is an oblate spheroid , the result would be the same if the moon's orbit were ...
... side of the globe , c d that on the other . If the earth were a perfect sphere , the moon's attraction would have no disturbing effect upon it . And though it is an oblate spheroid , the result would be the same if the moon's orbit were ...
Страница 31
... side , the deviation would be proportion- ally as great as that which the lunar nutation produces in the terrestrial axis . The earth's equatorial diameter exceeds , I have said , the polar only by a 300th part . The moon's attraction ...
... side , the deviation would be proportion- ally as great as that which the lunar nutation produces in the terrestrial axis . The earth's equatorial diameter exceeds , I have said , the polar only by a 300th part . The moon's attraction ...
Страница 38
... sides upwards , as df ; and some truncated wedges with their broad sides downwards , as acegi . The formation of these fissures will be completed at nearly the same instant of time . Conceive the mass A В to be then further uplifted ...
... sides upwards , as df ; and some truncated wedges with their broad sides downwards , as acegi . The formation of these fissures will be completed at nearly the same instant of time . Conceive the mass A В to be then further uplifted ...
Страница 39
... sides are downwards , than on bd fh , whose nar- row sides are downwards , and in the general movement the former are therefore pushed farther up than the latter . Or , to express it in another form , the latter slip down till their ...
... sides are downwards , than on bd fh , whose nar- row sides are downwards , and in the general movement the former are therefore pushed farther up than the latter . Or , to express it in another form , the latter slip down till their ...
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Страница 307 - Negroes were numerous in Egypt, but their social position in ancient times was the same that it now is, that of servants and slaves. 9. The national characteristics of all these families of man are distinctly figured on the monuments; and all of them, excepting the Scythians and Phoenicians, have been identified in the catacombs.
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Страница 23 - ... of war, to the remotest seas. Indeed it appears probable that the law of gravity, as established by the Creator, puts forth in this single water-fall more intense and effective energy, than is necessary to move all the artificial machinery of the habitable globe...
Страница 183 - Many enormous masses had already fallen on the beach, and the inhabitants thought that when the rains commenced far greater slips would happen. The effect of the vibration on the hard, primary slate which composes the foundation of the island was still more curious: the superficial parts of some narrow ridges were as completely shivered as if they had been blasted by gunpowder.
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Страница 347 - The necessity for the issue tube being a good conductor of electricity is shewn by the experiments of Dr Faraday, who says, " A metal, glass, or box-wood tube, well soaked in distilled water, being used for the steam issue, the boiler was rendered well negative, and the steam highly positive ; but if a quill or an ivory tube be used, the boiler received scarcely any change, and the stream of steam is also in a neutral state.