Electricity, magnetism, and acoustics |
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Common terms and phrases
acid acidulated water action Ampère's apparatus austral pole axis battery bismuth body boreal pole centre circuit circular circulating current coating coercive force coils combination conducting wire conductor connected constituents copper current passes cylinder decomposed decomposition deflection diamagnetic dipping needle disc distance earth effects electricity electro-magnet electro-motive electrolyte equal glass helical current horizontal hydrogen immersed imparted indefinite current induction intensity length Leyden jar liquid magnetic meridian magnetic needle magnetic pole magnetised manner mercury metallic molecule motion negative electrode negative pole nitric acid nonconductor north pole oxide oxygen phenomena pile placed plane plate platinum positive electrode positive fluid positive pole produced quantity rectilinear current rendered reoscope repelled represented in fig revolve right angles rotation round soft iron solution south magnetic pole south pole spiral sulphuric acid surface suspended transmitted tricity tube vertical vessel vibrations voltaic current voltaic pile zinc
Popular passages
Page viii - The perspicuity of the original has been retained, and chapters which had become obsolete, have been replaced by others of more modern character. The explanations throughout are studiously popular, and care has been taken to show the application of the various branches of physics to the industrial arts, and to the practical business of life.
Page vii - Mining Journal. THE HANDBOOK of HYDROSTATICS and PNEUMATICS. New Edition, Revised and Enlarged by BENJAMIN LOEWY, FRAS With 236 Illustrations. Post 8vo, 5^. cloth. " For those ' who desire to attain an accurate knowledge of physical science without the profound methods of mathematical investigation,' this work is not merely intended, but well adapted.
Page 267 - To render intelligible the means whereby these three properties have been made instrumental to the transmission of intelligence to a distance — 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...
Page 319 - In proceeding in either direction, east or west from these lines, the declination of the needle gradually increases, and becomes a maximum at a certain intermediate point between them. On the west of the Asiatic agonic the declination is west, on the east it is east. At present the declination in England is about 24° W. ; in Boston in the U.
Page 135 - The astronomical universe consists of masses, undoubtedly of great magnitude, but separated by such immense distances that they appear to us as material points ; these points attract each other in the inverse ratio of the squares of their distances, and this attraction is the only force which affects their motion. But if our senses were keen enough to show us all the details of the bodies which the physicist studies, the spectacle thus disclosed would hardly differ from the one which the astronomer...
Page 89 - This class of phenomena is more prominently developed by voltaic electricity, and will be more fully explained in the following Book. For the present it will therefore be sufficient to indicate an example of this species of decomposition by the electricity of the ordinary machine. The following experiment is due to Professor Faraday. Lay two pieces of tinfoil T T', fig.
Page 263 - Of all the applications of electric agency to the uses of life, that which is transcendently the most admirable in its effects, and the most important in its consequences, is the electric telegraph. No force...
Page 402 - ... 695. Reed pipes. — A reed is, in general, a thin oblong plate of some vibratory material, attached to an opening in such a manner that a current of air can pass into the opening, grazing, as it passes, the edges of the reed. Let g, fig. 374., represent, for example, an oblong plate of zinc or copper about an eighth of an inch in thickness, along the centre of which an oblong aperture is cut. At one end e of this aperture a thin and very elastic plate of metal e/is fastened, which nearly but...
Page 279 - The spark obtained from an amalgamated point is visible under water or in the flame of a candle. 4. ) Fasten a fine sewing-needle to the end of one of the wires, and touch the other pole with the free end of the needle ; a starlike red spark will be emitted. A continued stream of these sparks may be obtained by connecting a small round or triangular file with one pole, and presenting to it and removing from it with great rapidity the point of a copper wire attached to the other pole. 5. ) Coat the...
Page 75 - Ether and alcohol ignited. — Ether or alcohol may be fired by passing through it an electric discharge. Let cold water be poured into a wine-glass, and let a thin stratum of ether be carefully poured upon it. The ether being lighter will float on the water. Let a wire or chain connected with the prime conductor of...