The American Journal of ScienceJ.D. & E.S. Dana, 1895 |
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Стр. 287
... F. BARKER , OF PHILADELPHIA . THIRD SERIES . VOL . XLIX- [ WHOLE NUMBER , CXLIX . ] Nos . 289–294 . JANUARY TO TO JUNE , 1895 . WITH V PLATES . NEW HAVEN , CONNECTICUT . 1895 . THE TUTTLE , MOREHOUSE & TAYLOR PRESS , NEW HAVEN.
... F. BARKER , OF PHILADELPHIA . THIRD SERIES . VOL . XLIX- [ WHOLE NUMBER , CXLIX . ] Nos . 289–294 . JANUARY TO TO JUNE , 1895 . WITH V PLATES . NEW HAVEN , CONNECTICUT . 1895 . THE TUTTLE , MOREHOUSE & TAYLOR PRESS , NEW HAVEN.
Стр. 4
... whole country there , however , has been uplifted , without tilting , about 110 feet , after the end of the separate existence of the Western Erie lake , for this is the height of the Belmore beach around the west end of Lake Erie above ...
... whole country there , however , has been uplifted , without tilting , about 110 feet , after the end of the separate existence of the Western Erie lake , for this is the height of the Belmore beach around the west end of Lake Erie above ...
Стр. 13
... whole Ontario basin , to about 300 feet above the sea while the outflow continued here , and to probably 350 feet or more , lack- ing less than 100 feet of its present height , by the time when the much farther retreat of the ice ...
... whole Ontario basin , to about 300 feet above the sea while the outflow continued here , and to probably 350 feet or more , lack- ing less than 100 feet of its present height , by the time when the much farther retreat of the ice ...
Стр. 14
... whole or a considerable part of the time of the glacial Lake Iroquois , this area stretching 100 miles southeastward from New York was probably a land surface , across which the Hudson flowed with a slight descent to the But northward ...
... whole or a considerable part of the time of the glacial Lake Iroquois , this area stretching 100 miles southeastward from New York was probably a land surface , across which the Hudson flowed with a slight descent to the But northward ...
Стр. 57
... whole being immersed in a liquid whose temperature could be main- tained constant . By means of a pair of Jamin mirrors , two beams of light , starting from a Billet compensator , pass through the liquid in the prism , traversing in ...
... whole being immersed in a liquid whose temperature could be main- tained constant . By means of a pair of Jamin mirrors , two beams of light , starting from a Billet compensator , pass through the liquid in the prism , traversing in ...
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Стр. 236 - As a unit of resistance, the international ohm, which is based upon the ohm equal to 10" units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.
Стр. 508 - Index Kewensis: an enumeration of the genera and species of flowering plants from the time of Linnaeus to the year 1885 inclusive, together with their authors' names, the works in which they were first published, their native countries, and their synonyms.
Стр. 292 - It will be remembered that, from the velocity of sound in a gas, the ratio of specific heat at constant pressure to that at constant volume can be deduced by means of the equation when n is the frequency, A.
Стр. 237 - As a unit of quantity, the international coulomb, which is the quantity of electricity transferred by a current of one international ampere in one second. As a unit of capacity, the international farad, which is the capacity of a condenser charged to a potential of one international volt by one international coulomb of electricity.
Стр. 237 - ... As a unit of electromotive force, the international volt, which is the electromotive force that, steadily applied to a conductor whose resistance is one international ohm, will produce a current of one international ampere, and which is represented sufficiently well for practical use by \\\% of the electromotive force between the poles or electrodes of the voltaic cell known as Clark's cell, at a temperature of 15° C., and prepared in the manner described in the accompanying specification...
Стр. 318 - The crystals should be dissolved with the aid of gentle heat, but the temperature to which the solution is raised must not exceed 30° C.
Стр. 237 - The unit of induction shall be the Henry, which is the induction in a circuit when the electro-motive force induced in this circuit is one international volt while the inducing current varies at the rate of one Ampere per second.
Стр. 277 - We are in the case of Tarpeia, who opened the gates of the Roman citadel to the Sabines, and was crushed under the weight of the reward bestowed upon her.
Стр. 317 - The result will be the time-average of the current, if during the interval the current has varied. In determining by this method the constant of an instrument the current should be kept as nearly constant as possible, and the readings of the instrument observed at frequent intervals of time. These observations give a curve from which the reading corresponding to the mean current (time-average of the current) can be found. The current, as calculated by the voltameter, corresponds to this reading.
Стр. 316 - ... through a solution of nitrate of silver in water. The silver voltameter measures the total electrical quantity which has passed during the time of the experiment, and by noting this time the time average of the current, or, if the current has been kept constant, the current itself, can be deduced. In employing the silver voltameter to measure currents of about one ampere...