The American Journal of Science and ArtsS. Converse, 1870 |
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Page 23
... helix which was traversed by an electric current , became a strong magnet when liquid at a tempe- rature of 1300 ° C. , and retained its magnetism while cooling ( Comptes Rendus de l'Acad . des Sciences , Feb. , 1869 . forms the ...
... helix which was traversed by an electric current , became a strong magnet when liquid at a tempe- rature of 1300 ° C. , and retained its magnetism while cooling ( Comptes Rendus de l'Acad . des Sciences , Feb. , 1869 . forms the ...
Page 195
... helix , the attention of natural philosophers is naturally directed to the necessity of subjecting Ampère's theory of mag- netism to as severe deductive tests as can be applied . Thus , from new experiments and lines of research ...
... helix , the attention of natural philosophers is naturally directed to the necessity of subjecting Ampère's theory of mag- netism to as severe deductive tests as can be applied . Thus , from new experiments and lines of research ...
Page 196
... Helix E contains 5575 feet of wire in 696 turns , and on ac- count of its better insulation and greater number of turns is superior in strength to helix W. Helix W contains 551 feet of wire in 688 turns . 1 . N W E S The accompanying ...
... Helix E contains 5575 feet of wire in 696 turns , and on ac- count of its better insulation and greater number of turns is superior in strength to helix W. Helix W contains 551 feet of wire in 688 turns . 1 . N W E S The accompanying ...
Page 197
... helix ) the following experi- ments were made . A core 10 in . long and 1.64 in . in diameter composed of 400 soft well annealed iron wires , was placed in helix E and the plane of the ends of the wires facing the needle were brought ...
... helix ) the following experi- ments were made . A core 10 in . long and 1.64 in . in diameter composed of 400 soft well annealed iron wires , was placed in helix E and the plane of the ends of the wires facing the needle were brought ...
Page 199
... helix east of the compass and the W helix west , and to indicate the deflection of the needle we will use such ex- pressions as " S. 17 ° W. " which means , S. end of needle deflect- ed 17 ° W. or toward helix W. In the case of N. poles ...
... helix east of the compass and the W helix west , and to indicate the deflection of the needle we will use such ex- pressions as " S. 17 ° W. " which means , S. end of needle deflect- ed 17 ° W. or toward helix W. In the case of N. poles ...
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Common terms and phrases
Abiogenesis action alcohol ambulacral ammonia amount Antedon antozone apparatus appears Arisaig arsenic acid arsenite arsenite of ethyl atomic volumes auroras body boiling Brachiopods carbon cent chlorid Cimoliasaurus color columbite compounds containing copper core corresponding Cretaceous Crinoids crystals deflection determined diameter distilled Elasmosaurus elasticity electrized oxygen Eozoon equal equator ether experiments feet flame formula fossils galvanometer genus geological give glass gneisses heat helix hydrogen hypermanganate inch iodid iron Laurentian Leidy length less limestone lines liquid magnetic manganese mass matter mean metal method molecules needle observations obtained oxyd oxygen ozone paper period photosphere plants plates portion potassium potassium iodid precipitated present prism produced Prof quantity radiation region rocks selenium sodium solar spots solution species specimens spectrum spirals sulphur sulphuric acid sun's surface temperature theory thickness tion tube vibration wire zinc
Popular passages
Page 386 - Out of the eater came forth meat, and out of the strong came forth sweetness.
Page 389 - But the great tragedy of Science — the slaying of a beautiful hypothesis by an ugly fact...
Page 402 - I commenced this Address by asking you to follow me in an attempt to trace the path which has been followed by a scientific idea, in its long and slow progress from the position of a probable hypothesis to that of an established Law of Nature. Our survey has not taken us into very attractive regions ; it has lain chiefly in a land flowing with the abominable, and peopled with mere grubs and mouldiness.
Page 385 - ... something which is kept away by gauze. But gauze will not keep away aeriform bodies, or fluids. This something must, therefore, exist in the form of solid particles too big to get through the gauze. Nor is one long left in doubt what these solid particles are; for the blowflies, attracted by the...
Page 402 - ... And thus mankind will have one more admonition that " the people perish for lack of knowledge " ; and that the alleviation of the miseries, and the promotion of the welfare, of men must be sought, by those who will not lose their pains, in that diligent, patient, loving study of all the multitudinous aspects of Nature, the results of which constitute exact knowledge, or Science.
Page 397 - ... of an inch in diameter, which are made visible in the lymph by the microscope. Similar experiments have proved that two of the most destructive of epizootic diseases, sheep-pox and glanders, are also dependent for their existence and their propagation upon extremely small living solid particles, to which the title of mierozymes is applied.
Page 401 - It seems to me impossible to rise from the perusal of those publications without a strong conviction that the lamentable mortality which so frequently dogs the footsteps of the most skilful operator, and those deadly consequences of wounds and injuries which seem to haunt the very walls of great hospitals, and...
Page 395 - I should expect to be a witness of the evolution of living protoplasm from not living matter. I should expect to see it appear under forms of great simplicity...
Page 143 - And assuredly, there is no mark of degradation about any part of its structure. It is, in fact, a fair average human skull, which might have belonged to a philosopher, or might have contained the thoughtless brains of a savage.
Page 384 - The philosophers of antiquity, interrogated as to the cause of these phenomena, were provided with a ready and a plausible answer. It did not enter their minds even to doubt that these low forms of life were generated in the matters in which they made their appearance. Lucretius, who had drunk deeper of...