Experimental Researches in Electricity: Series 19-29 [Phil. trans., 1846-52. Other electrical papers from Roy. inst. proc., and Phil. mag.] 1855B. Quaritch, 1855 |
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acid æther amount antimony appears atmosphere axial line bismuth carbonic acid cause cobalt cocoon silk condition conducting power conductor copper copper wire core crystal curves cylinder deflection degree diamagnetic bodies direction distance earth east effect electric current electro-magnet equal equator equatorial experiments external fluid former galvanometer gases globe gravity heavy glass Hobarton horizontal inclination influence intensity lines of force lines of magnetic loop magnecrystallic axis magnecrystallic force magnetic action magnetic axis magnetic field magnetic force magnetic lines magnetic meridian magnetic needle magnetic poles mass matter mean metal mh mh mh motion moving wire netic nickel nitrogen nitrous oxide observed optic axis oxygen paramagnetic particles passing Petersburgh phænomena plane plates polarity position present produced relation repelled repulsion revolution rotation side soft iron solution space substances surface suspended swing temperature thickness tion tube variation whilst
Popular passages
Page 530 - That gravity should be innate, inherent, and essential to matter, so that one body may act upon another at a distance through a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to another, is to me so great an absurdity, that I believe no man, who has in philosophical matters a competent faculty of thinking, can ever fall into it.
Page 530 - ... a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to another, is to me so great an absurdity, that I believe no man who has in philosophical matters a competent faculty of thinking, can ever fall into it. Gravity must be caused by an agent acting constantly according to certain laws ; but whether this agent be material or immaterial, I have left to the consideration of my readers.
Page 418 - It has never been resolved into simpler or elementary influences and may perhaps best be conceived of as an axis of power having contrary forces, exactly equal in amount, in contrary directions.
Page 1 - held an opinion, almost amounting to conviction, in common, I believe,. with many other lovers of natural knowledge, that the various forms under which the forces of matter are made manifest have one common origin; in other words, are so directly related and mutually dependent, that they are convertible, as it were, into one another, and possess equivalents of power in their action.
Page 73 - Ampere's theory, this view would be equivalent to the supposition that, as currents are induced in iron and magnetics, parallel to those existing in the inducing magnet or battery wire, so, in bismuth and other diamagnetics, the currents induced are in the contrary direction.
Page 447 - You are aware of the speculation* which I some time since uttered respecting that view of the nature of matter which considers its ultimate atoms as centres of force, and not as so many little bodies surrounded by forces, the bodies being considered in the abstract as independent of the forces and capable of existing without them. In the latter view, these little particles have a definite form and a certain limited size ; in the former view such is not the case, for that which represents size may...
Page 2 - ... that the various forms under which the forces of matter are made manifest have one common origin; or, in other words, are so directly related and mutually dependent, that they are convertible, as it were, one into another, and possess equivalents of power in their action.
Page 20 - The magnetic forces do not act on the ray of light directly and without the intervention of matter, but through the mediation of the substance in which they and the ray have a simultaneous existence; the substances and the forces giving to and receiving from each other the power of acting on the light.
Page 517 - ... the same voltaic source, the same current in the same length of the same wire gives a different result as the intensity is made to vary with -variations of the induction around the wire. The idea of intensity, or the power of overcoming resistance, is as necessary to that of electricity, either static or current, as the idea of pressure is to steam in a boiler, or to air passing through apertures or tubes, and we must have language competent to express these conditions and these ideas.
Page 450 - ... various kinds of lines of force ; thus there are the lines of gravitating force, those of electro-static induction, those of magnetic action, and others partaking of a dynamic character might be perhaps included. The lines of electric and magnetic action are by many considered as exerted through space like the lines of gravitating force. For my own part, I incline to belie.ve that when there are intervening particles of matter (being themselves only centres of force), they take part in carrying...