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absolute according acid amount amplitude angles applied atmo axis body bulk Calton Hill carbonic acid centre compression condition constant cooling copper cubic definite degree denote density diameter direction distortion earth elastic solid electric elongation equal equations equilibrium ether experimental experiments expression flexural rigidities flexure fluid force formula given glass globe grammes harmonic function Hence homogeneous hydrogen india-rubber inertia infinitely small iron isotropic Joule length limits of elasticity liquid mathematical measure melting mercury metals modulus of rigidity moment of inertia motion nutation observations parallel perpendicular plane pressure produced quantity of heat radius reckoned Regnault resilience resistance rigidity rotation sensible simple longitudinal specific heat spherical square centimetre strain stress substance supposed surface TABLE temperature theory thermal capacity thermal conductivity thermo thermodynamic thermoscope Thomson torsional tube twisted unit variation velocity vibrations viscosity volume weight whole wire Young's modulus
Seite 513 - Mathematical and Physical Papers. By Sir W. THOMSON, LL.D., DCL, FRS, Professor of Natural Philosophy, in the University of Glasgow. Collected from different Scientific Periodicals from May, 1841, to the present time.
Seite 108 - ... he says, latent heat is evolved or set free. But as this expression relates to an hypothesis depending on the supposition, that the heat of bodies is owing to their containing more or less of a substance called the matter of heat, and as I think Sir Isaac Newton's opinion, that heat consists in the internal motion of the particles of bodies, much the most probable, I chose to use the expression, heat is generated.
Seite 295 - I infer that the general climate cannot be sensibly affected by conducted heat, at any time more than 10,000 years after the commencement of superficial solidification.
Seite 315 - Scrope called it)! the solid crust would yield so freely to the deforming influence of sun and moon that it would simply carry the waters of the ocean up and down with it, and there would be no sensible tidal rise and fall of water relatively to land.
Seite 230 - A copper ball, 2 centimetres radius, having a thermo-electric junction at its centre, was suspended in the interior of a double-walled tin-plate vessel which had the space between the double sides filled with water at the atmospheric temperature, and the interior coated with lamp-black. The other junction was in metallic contact with the outside of the vessel, and the circuit was completed through the coil of a mirror galvanometer. One junction was thus kept at a nearly constant temperature of about...
Seite 419 - ... was accentuated by Mr Oliver Heaviside, in the Electrician, July 12, 1884; and in the following words in the Philosophical Magazine for 1886 second half-year p. 135: " Water in a round pipe is started from rest and set into a state of steady motion by the sudden and continued application of * See "Stability of Fluid motion," § 28: Philosophical Magazine, August, 1887.
Seite 301 - In the honey-combed solid and liquid mass thus formed, there must be a continual tendency for the liquid, in consequence of its less specific gravity, to work...
Seite 288 - To suppose, as Lyell, adopting the chemical hypothesis, has donet, that the substances, combining together, may be again separated electrolytically by thermo-electric currents, due to the heat generated by their combination, and thus the chemical action and its heat continued in an endless cycle, violates the principles of natural philosophy in exactly the same manner, and to the same degree, as to believe that a clock constructed with a self-winding movement may fulfil the expectations of its ingenious...
Seite 333 - Rt of the diurnal term. The cause of the semidiurnal variation of barometric pressure cannot be the gravitational tide-generating influence of the sun, because, if it were, there would be a much larger lunar influence of the same kind, while in reality the lunar barometric tide is insensible or nearly so. It seems therefore certain that the semidiurnal variation of the barometer is due to temperature.
Seite 8 - ... limit to the elasticity of bulk in the direction of increase of pressure for any solid or fluid ; but whether continued augmentation produces continued diminution of bulk towards zero without limit, or whether for any or every solid or fluid there is a limit towards which it may be reduced in bulk, but smaller than which no degree of pressure, however great, can condense it, is a question which cannot be answered in the present state of science.