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acid alloy anode apparatus approximately atmos atom axis boiling-point calculated cathode cent centim centimetre coefficients coil condenser constant corresponding curve dark space deflexion density determined diagram diameter dihydrol dilution discharge dissociation distance effect elastic electric electrometer equation errors ether experiments extensometer felsitic formula frequency galvanometer give given gradient gramme heat of fusion hydrogen increase ions iron J. J. Thomson latent heat liquid Lord Kelvin Lord Rayleigh magnetic force maximum mean measured metals method mode of ionization molecular molecules motion negative normal observations obtained oxygen particles period permeability Phil plate platinum position pressure probably produced Prof pyrometer quantity radius ratio resistance rocks scale screw shown solution specimen sphere stress surface Table temperature tension terminal velocity tests theory torsion trihydrol tube velocity vibration viscosity wave-train waves wire Wood's metals yield-point zero
Page 47 - Microseismic shock : recorded by a single seismograph or by seismographs of the same model, but not by several seismographs of different kinds; the shock felt by an experienced observer.
Page 188 - II., we see that the minimum density is about '35, and at distance approximately "87 from the centre. § 9. Let us suppose now our atom to be set in motion through space occupied by ether, and kept in motion with a uniform velocity v, which we shall first suppose to be infinitely small in comparison with the propagational velocity of equivoluminal* waves through pure ether undisturbed by any other substance than that of the atom. The velocity of the earth in its orbit round the sun being about 1/10,000...
Page 539 - THE ANNALS AND MAGAZINE OF NATURAL HISTORY, INCLUDING ZOOLOGY, BOTANY, AND GEOLOGY. MONTHLY, PRICE 2*.
Page 197 - It is remarkable that according to the particular assumptions specified in § 5, a density of ether in the centre of the atom considerably greater than 100 times the density of undisturbed ether is required to make the refractivity as great as that of oxygen. There is, however, no difficulty in admitting so great a condensation of ether by the atom, if we are to regard our present problem as the basis of a physical hypothesis worthy of consideration. § 18. There is, however, one serious, perhaps...
Page 48 - General awakening of those asleep; general ringing of bells, oscillation of chandeliers, stopping of clocks; visible disturbance of trees and shrubs.
Page 48 - Fourth, the intensity of the shock, expressed either in common language or in terms of some arbitrary scale. Professor Rockwood, in indicating the intensity, has used the adjectives: 1, very light; 2, light; 3, moderate; 4, strong; 5, severe; 6, destructive; but has added a Roman numeral to indicate the intensity, according to the Rossi-Forel scale, adopted by Swiss and Italian seismologists. In Professor Rockwood's papers, very light is II or III; light, IV; moderate, V or VI; strong, VI or VII;...
Page 50 - Rather strong, felt generally indoors, but by few outside, with waking of those asleep, with alarm of some persons, rattling of doors, ringing of bells, rather large oscillation of suspended objects, stopping of clocks.
Page 306 - ... within them, would cause apparent attraction between a positive and a negative electron ; and apparent repulsion between two electrons both positive or both negative. § 22. But these apparent attractions and repulsions would increase much more with diminished distance than according to the Newtonian law of the inverse square. This law, which we know from Coulomb and Cavendish to be true for electric attractions and repulsions, cannot be explained t>y stress in ether according to any known or...
Page 181 - electro-magnetic theory of light " does not cut away this foundation from the old undulatory theory of light. It adds to that primary theory an enormous province of transcendent interest and importance ; it demands of us not merely an explanation of all the phenomena of light and radiant heat by transverse vibrations of an elastic solid called ether, but also the inclusion of electric currents, of the permanent magnetism of steel and lodestone, of magnetic force, and of electrostatic force, in a...