Miscellaneous Scientific PapersC. Griffin, 1881 - 567 Seiten |
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absolute temperature absolute zero actual energy actual heat atomic atmosphere atomic centres axes axis body calculated carbonic acid co-ordinates coefficients of elasticity common logarithms compression condition constant corresponding cubic cylinder deduced denote density diagram elementary streams engine equal equation expansive power experiments expressed Fahrenheit fluid foot-pounds force formula function gases given H₁ hypothesis Inches of Mercury investigation isothermal curve Joule latent heat liquid longitudinal means mechanical molecular vortices motion nuclei P₁ P₂ paper particles perfect gas plane potential energy pressure Q₁ Q₂ quantity of heat Rankine Rankine's ratio real specific heat Regnault represented respectively SECTION solid square steam substance surface theoretical theory thermodynamics transmission trochoidal unity of weight V₁ vapour variation velocity velocity of sound vibrations vis viva volume water-lines wave
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Seite xxxviii - If the absolute temperature of any uniformly hot substance be divided into any number of equal parts, the effects of those parts in causing work to be performed are equal...
Seite 540 - It is to be observed, in the first place, that no substance yet known fulfils the condition expressed by the equation -% = — m'= constant, between finite limits of disturbance, at a constant temperature, nor in a state of non-conduction of heat (called the adiabatic state). In order, then, that permanency of type may be possible in a wave of longitudinal disturbance, there must be both change of temperature and conduction of heat during the disturbance.
Seite 207 - The experimental evidence is every day accumulating of a law which has long been conjectured to exist, — that all the different kinds of physical energy in the universe are mutually convertible — that the total amount of physical energy, whether in the form of visible motion and mechanical power, or of heat, light, magnetism, electricity, or chemical agency, or in other forms not yet understood, is...
Seite xxxvi - Whatever he imagined about molecular vortices, with their nuclei and atmospheres, was so clearly imaged in his mind's eye, that he, as a practical engineer, could see how it would work. However intricate, therefore, the machinery might be which he imagined to exist in the minute parts of bodies, there was no danger of his going on to explain natural phenomena by any mode of action of this machinery which was not consistent with the general laws of mechanism. Hence, though the construction and distribution...
Seite 218 - Hypotheses in various Branches of Physics. The fact that the theory of motions and motive forces is the • only complete physical theory, has naturally led to the adoption of mechanical hypotheses in the theories of other branches of physics ; that is to say, hypothetical definitions, in which classes of phenomena are defined conjecturally...
Seite xxxvii - A PERFECT GAS is a substance in such a condition, that the total pressure exerted by any number of portions of it, at a given temperature, against the sides of a vessel in which they are enclosed, is the sum of the pressures which each such portion would exert if enclosed in the vessel separately at the same temperature...