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
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Página 503 - 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 any thing 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.
Página 528 - ... 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" (3d letter to Bentley, 5th February 1692-93).
Página 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.
Página 327 - A line of magnetic force may be denned to be that line which is described by a very small magnetic needle, when it is so moved in either direction correspondent to its length, that) the needle is constantly a tangent to the line of motion...
Página 443 - 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 be considered as extending to any distance to which the lines of force of the particle extend : the particle indeed is supposed to exist only by these forces, and where they are it is.
Página 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.
Página 447 - ... of polarisation is not the same as that which occurs on the surface of disturbed water or the waves of sound in gases or liquids, for the vibrations in these cases are direct, or to and from the centre of action, whereas the former are lateral. It seems to me that the resultant of two or more lines of force is in an apt condition for that action, which may be considered as equivalent to a lateral vibration ; whereas a uniform medium like the aether does not appear apt, or more apt than air or...
Página 515 - ... 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.
Página 20 - It is, no doubt, difficult in the present state of our knowledge to express our expectation in exact terms; and, though I have said that another of the powers of nature is, in these experiments, directly related to the rest, I ought, perhaps, rather to say that another form of the great power is distinctly and directly related to the other forms...
Página 168 - Here end my trials for the present. The results are negative. They do not shake my strong feeling of the existence of a relation between gravity and electricity, though they give no proof that such a relation exists.