The London, Edinburgh and Dublin Philosophical Magazine and Journal of ScienceTaylor & Francis, 1861 |
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absorption action ćther alcohol alloy ammonia angle apparatus appears atmosphere atoms axis body boiling carbonic acid centre cerium chloride coil colour column compound conducting power conductor containing copper corresponding cyanide deflection density determined diameter direction discharge effect electricity electromotive force equal equation ether experiments expressed ferrocyanide filter fluid formula function galvanometer gases glass glycerine gneiss gutta percha heat Hence hydrochloric acid hydrogen iron light lines of force liquid magnetic matter means medium mercury metal millims molecular motion needle nitric acid nitrogen observed obtained oxide oxygen paper particles phenomena Phil plane plate polarization poles position potash pressure produced Professor quantity rays relation resistance ripple rotation salt silver solution spectrum streams substance succinic acid sulphuric acid surface synthemes temperature theory tion tube tungstic acid values vapour variation velocity vortices wire دو دو
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Síđa 203 - Col. 1 Col. 2 Col. 3 Col. 4 Col. 5 Col. 6 Col. 7 Col. 8 Col. 9 Col. 10 Col.
Síđa 281 - ... a layer of particles, revolving each on its own axis in the opposite direction to that of the vortices, so that the contiguous surfaces of the particles and of the vortices have the same motion. In mechanism, when two wheels are intended to revolve in the same direction, a wheel is placed between them so as to be in gear with both, and this wheel is called an "idle wheel.
Síđa 316 - the theory of the transitory changes is in itself one of the most interesting and important points to which the attention of magnetic inquirers can be turned, as they are no doubt intimately connected with the general causes of terrestrial magnetism, and will probably lead us to a much more perfect knowledge of these causes than we now possess.
Síđa 86 - On the Existence of a Fourth Member of the Calcium Group of Metals', Phil. Mag. 21, 86-8 (1861), reprinted Chem.
Síđa 527 - It is desirable that the evidence of further experiments with such plants, under conditions of more healthy growth, should be obtained. Results obtained with some other plants, are in the same sense as those with Graminaceous and Leguminous ones, in regard to the question of the assimilation of free nitrogen. In view of the evidence afforded of the non-assimilation of free nitrogen by plants, it is very desirable that the several actual or possible sources whence they may derive combined nitrogen...
Síđa 44 - The encouragement I derive from this appreciation by mathematicians of the mode of figuring to one's self the magnetic forces by lines, emboldens me to dwell a little more upon the further point of the true but unknown natural magnetic action. Indeed, what we really want, is not a variety of different methods of representing the forces., but the one true physical signification of that which is rendered apparent to us by the phenomena, and the laws governing them.
Síđa 229 - ... consequence, the column in the globe stem rose, and that in the outer tube fell, the difference of level forming a measure of the expansion of the steam. Observations of the levels of the columns were made by means of a cathetometer at different temperatures, up to 10° or 20° above the saturation point ; and the maximum temperature of saturation was, for reasons developed by the experiments, deduced from, a point at which the steam was decidedly superheated. The results of the experiments,...
Síđa 64 - Torpedo, and probably of every other electric fish, there is a continual circulation of electricity in the liquid medium in which the animal is immersed. In fact, when the electric organ, or even a fragment of it, is removed from the living fish and placed between the ends of a galvanometer, the needle remains deflected at a constant angle for twenty or thirty hours, or even longer.
Síđa 152 - ... referred to formed the necessary basis of his discovery ; so did the laws of Kepler furnish to Newton the basis of the theory of gravitation. But what Kirchhoff has done carries us far beyond all that had before been accomplished. He has introduced the order of law amid a vast assemblage of empirical observations, and has ennobled our previous knowledge by showing its relationship to some of the most sublime of natural phenomena.
Síđa 534 - This paper gave the geological results of three years' exploration of the British Territories in North America along the frontier-line of the United States, and westward from Lake Superior, to the Pacific Ocean. - It began by showing that the central portion of North America is a great triangular plateau, bounded by the Rocky Mountains, Alleghanies, and Laurentian axis, stretching from Canada to the Arctic Ocean, and divided into two slopes by a watershed that nearly follows the political boundary-line,...