Proceedings of the Royal Society of London, Volume 8Taylor & Francis, 1857 - Electronic journals |
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Page 14
... wires passing down the mine - shaft and forming a closed circuit through the battery , the journeyman - clock , and the two galvanometers . The working party consisted of Mr. Dunkin ( superintendent ) and Mr. Ellis from the Royal ...
... wires passing down the mine - shaft and forming a closed circuit through the battery , the journeyman - clock , and the two galvanometers . The working party consisted of Mr. Dunkin ( superintendent ) and Mr. Ellis from the Royal ...
Page 41
... wire of platina passed through it , the ends of which were connected with iron wires passing away to a sensitive galvanometer . The deflection due to a given difference of temperature of the same metallic junctions having been ...
... wire of platina passed through it , the ends of which were connected with iron wires passing away to a sensitive galvanometer . The deflection due to a given difference of temperature of the same metallic junctions having been ...
Page 51
... wire of Copper Gold Zinc Brass grs . , and Cop- per , 19:41 grs . The number at the head of each column expresses the temperature Centigrade by mercurial thermometers , at which the two metals written below it are thermo- electrically ...
... wire of Copper Gold Zinc Brass grs . , and Cop- per , 19:41 grs . The number at the head of each column expresses the temperature Centigrade by mercurial thermometers , at which the two metals written below it are thermo- electrically ...
Page 52
... wire , either of iron or of copper , is sensible to tests he could readily command , and more so in the case of the ... wire- drawing have different thermo - electric qualities lengthwise from wires of the same substance softened by ...
... wire , either of iron or of copper , is sensible to tests he could readily command , and more so in the case of the ... wire- drawing have different thermo - electric qualities lengthwise from wires of the same substance softened by ...
Page 53
... wire - drawing . In cadmium , not examined by Magnus , and lead , which had not a given result , the experiments now adduced show a thermo - electric effect of hammering , the same as in all the other metals except iron . Zinc wire was ...
... wire - drawing . In cadmium , not examined by Magnus , and lead , which had not a given result , the experiments now adduced show a thermo - electric effect of hammering , the same as in all the other metals except iron . Zinc wire was ...
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Common terms and phrases
Abstract alcohol ammonia angles appears ARTHUR CAYLEY blood body boiling Brachiopoda C₁ C₂ carbonate carbonic acid catenary cavity centre chemical chloride coefficients colour compound connexion containing corresponding crystals density dentine determined diameter Dinitroethylate direction effect electric equal equation ethyl examined experiments F.R.S. Received fibres fluid force formula functions gall-bladder given glacier grains heart heat hydrocarbons hydrogen inch induction iodide iron length light liquid magnetic mass means membrane memoir metal minute motion mucous membrane muscles muscular nearly nerves nitric acid observations Observatory obtained optical organ oxide oxygen paper particles pharyngeal phenomena plane plates platinum Pleuræ portion potassium present pressure produced Professor quantity quinidin remarkable researches rhythmic action Royal Society side silicate silver solution structure strychnia substance sulphocyanide sulphuric acid surface symmetric functions temperature theory tion troy pounds tube variations velocity vessel weight wire
Popular passages
Page 254 - Geology and Mineralogy, considered with reference to Natural Theology,
Page 274 - Islands, which formed the subject of a paper read before the Royal Society, and published in the ' Philosophical Transactions...
Page 289 - Helmholtz's galvanometer, with or without modification. The time of vibration of the suspended magnet, and the efficiency of the copper damper, will be so arranged, that during the electric pulse the suspended magnet will turn from its position of equilibrium into a position of maximum deflection, and will fall back to rest in its position of equilibrium. The possibility of fulfilling these conditions is obvious from the form of the curve I have found to represent the electric pulse. The observer...
Page 82 - And we are fully persuaded, that with reasonable precautions, it will always be possible to provide for the accurate restoration of standards by means of material copies which have been carefully compared with them, more securely than by reference to any experiments referring to natural constants.
Page 115 - ... or closed. The hydrostatic pressure applied to force the liquid through any of the tubes will cause them to swell, and to press against the others, which will thus, by peristaltic action, compel the liquid contained in them to move in different parts of them in one direction or the other. A long solid cylinder of...
Page 576 - the conclusion arrived at in the latter part of the last section, that blood flowing through an inflamed part behaves itself in the same way as when separated from the living body, naturally leads us to infer that the tissues of the inflamed part are in some degree approximated to the condition of dead matter, or, in other words, have suffered a diminution of power to discharge the offices peculiar to them as components of the healthy animal frame. This inference is strongly supported by considering...
Page 394 - These cannot be concluded from comparatively short series of observations without giving to those observations extreme nicety, so as to determine with perfect precision the mean state of the elements at the two extremes of the period embraced ; which, as already observed, presupposes a knowledge of the casual deviations.
Page 446 - I would further wish to make it distinctly understood, that no part of the ice, even if supposed at the outset to be solid, or free from porosity, can resist being permeated by the water squeezed against it from such parts as may be directly subjected to the pressure ; because, the very fact of that water being forced against any portions of the ice supposed to be solid, will instantly subject them to pressure, and so will cause melting to set in throughout their substance, thereby reducing them...
Page 540 - If chemical composition is to be looked to for the explanation, very slight deviations from perfect purity must be sufficient to produce great effects on the electric conductivity of copper ; the following being the results of an assay by Messrs.
Page 542 - ... that any deficiency which the strand may present when accurately compared with solid wire, is nothing in comparison with the differences presented by different samples chosen at random from various stocks of solid wire and strand in the process of preparation for telegraphic purposes.