Philosophical MagazineTaylor & Francis, 1851 |
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Andere Ausgaben - Alle anzeigen
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action æther ammonia analysis angle apiine appears atmosphere atoms attraction axes axis ball bebeerine body boracic boracic acid calm carbonic acid centre Cloudy colour common contained crystal decomposition determined diamagnetic diameter direction distance effect equal equation exhibited experiments expression fluid force formula function gabbro given glass heat Hence hydrochloric acid inch induction intensity intersection J. J. SYLVESTER latter light magnetic mass matrass means meteor Midhurst millims minor determinants motion needle nitric acid observed obtained oxide oxygen paper passed phænomena phænomenon Philosophical Magazine phosphorescence plane plate polarization pole portion position potash pressure probability produced Professor Professor Potter quadratic function quantity rain P.M. rays remarkable rotation Sandwick soft iron solution spar sphere substance sulphur sulphuret sulphuric acid supposed surface temperature theory tion tube Uckfield vapour velocity vibration weight
Beliebte Passagen
Seite 377 - Assuming, therefore, that the sun's light is the result of some peculiar action by which it brings forth into visible existence the element of light, which I conceive to be latent in and diffused throughout space, we have but to imagine the existence of a very probable condition ; namely, the unequal diffusion of this light-yielding element, to catch a glimpse of a reason why our sun may, in common with his solar brotherhood, in some portions of his vast stellar orbit, have passed, and may yet have...
Seite 280 - We have explained how a magnetic needle over which an electric current passes will be deflected to the right or to the left, according to the direction given to the current. Now, it is always easy to give the current the one direction or the other, or to suspend it altogether, by merely changing the end of the galvanic trough with which the wires are connected, or by breaking the contact.
Seite 377 - Euclid's, and show by construction that its truth was known to us ; to demonstrate, for example, that the angles at the base of an isosceles triangle are equal...
Seite 77 - These properties it carries into the atmosphere, so that the latter is, in reality, a magnetic medium, ever " varying, from the influence of natural circumstances, in its magnetic power. If a mass of air be cooled, it " becomes more paramagnetic; if heated, it becomes less paramagnetic, (or diamagnetic,) as compared with " the air in a mean, or normal condition...
Seite 168 - Yard, was an upright engine of two feet stroke; and in order to have facilities for comparative trials and experiments, it was necessary that a double engine should be made, the two parts exactly corresponding. Two bars of soft iron, six inches diameter and three feet in length, were the prime movers, and these were balanced by means of connecting rods and cranks upon a fly-wheel shaft. The balance wheel and shaft together weighed six hundred pounds.
Seite 377 - ... those mighty laws which are so mysteriously indicated by the existence of the phenomena in question, and with the evidences of which we are yet surrounded. " A course of observations on the solar spots, and on the remarkable features which from time to time appear on the sun's surface, which I have examined with considerable assiduity for several years, had, in the first place, led me to entertain the following conclusion ; namely, that, whatever be the nature of solar light, its main source...
Seite 541 - ... curator of the Museum of Practical Geology, then established in Craig's-court ; and within a few days of his death he was busily engaged in making arrangements for the public opening of the new museum in Piccadilly. Richard Phillips was one of the original founders of the Geological Society. He was for many years a member of the Council of the Royal Society, and for the last two years President of the Chemical Society. 12. Aged 61, the Hon. and Rev. John Evelyn Boscawen, Rector of Wotton, Surrey,...
Seite 166 - The first principal experiments were made with a small trial engine, built expressly for the purpose, and with the utmost care in reference to mechanical accuracy. Attached to this was a dynamometer of new construction, and admirably adapted to the purpose. This was invented by my principal engineer, and measured in a most satisfactory manner the dynamic power of the engine at any given velocity — a great desideratum in estimating this new power. With this trial engine the following important questions...
Seite 548 - ... in others there are either few or none of them, to whatever cause this may be owing, whether to their mutual gravitation, or to some other law or appointment of the Creator.
Seite 172 - ... flame, but my object at present is only to point out their application to the use of the collier. " All that he requires to ensure security, are small wire cages to surround his candle or his lamp, which may be made for a few pence, and of which various modifications may be adopted, and the application of this discovery will not only preserve him from the fire-damp, but enable him to apply it to use, and to destroy it at the same time that gives him a useful light.