Mathematical and Physical Papers, Volume 6At the University Press, 1911 |
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air drawn aluminium brass carbonic acid carbonic acid gas centimetre centims centre charged compass copper curve cylinder deflection deviation diagram diameter difference of potential disc diselectrifying distance dygogram electric density electric machine electrification of air electrified air electrion electrometer electromotive force equal equilibrium ether experiments flame force funnel gases grammes harmonic heat hydrogen insulated metal insulated terminal J. J. Thomson James Watt leakage Lord Kelvin magnetic mathematical metallic connection metallic zero minutes motion Natural Philosophy needle point negative electrification observed obtained paper paraffin Phil placed plate polished positive electricity positive or negative pressure produced pulleys pump quadrant electrometer quantity Radium resinous electricity Röntgen rays Royal Society scale divisions screen shaft ship ship's simple harmonic motion surface temperature tidal tide gauges tide predicter tinfoil U-tube University of Glasgow uranium velocity vertical volts volts neg volts positive water-dropper Watt zinc and copper وو
Popular passages
Page 138 - ... immediately proved that another power must necessarily be concerned, for it was not possible to refer the electricity exhibited by the opposition of metallic surfaces to any chemical alterations, particularly as the effect is more distinct in a dry atmosphere, in which even the most oxidizable metals do not change, than in a moist one, in which many metals undergo oxidation.
Page 130 - If it varies with temperature, its variations may be stated in fractions of a volt per degree. On the other hand, thermoelectric electromotive force depends essentially on difference of temperature, and is essentially to be reckoned per degree] as for example, in fraction of a volt per degree.
Page 99 - ... on the volta difference between the two opposed surfaces of metals, more or less tarnished as they generally were. This deviation took place gradually in about half a minute with one arrangement of apparatus, and in about four minutes with a second arrangement. On the other hand, if the insulated metal had a charge given to it of such an amount as to cause the electrometer reading to deviate from the metallic zero beyond the uranium-conductance-zero, the reading quickly fell to this conductance-zero,...