The Theory of HeatMacmillan, 1894 - 719 pages |
Contents
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Common terms and phrases
absorption air thermometer apparatus atmos atmosphere axis bath body boiling point Boyle's law bulb calorimeter carbonic acid change of temperature change of volume Chimie coefficient of expansion compressed condensation conductivity consequently constant pressure contained corresponding critical point curve cylinder density determined diathermancy difference of temperature dilatation Dulong and Petit employed energy equal equation ether evaporation experimental experiments filled flask formula galvanometer gases glass gradually Hence hydrogen immersed increase instrument investigation isothermal Joule latent heat liquefaction liquid lower manometer mass means measured melting mercury metal method mixture molecules motion observed obtained passing Phil Physique placed plate platinum Pogg quantity of heat radiant heat radiation rate of cooling Regnault rises saturated vapour solid specific heat steam stem substance sulphuric acid surface tempera theory thermal capacity thermopile tion tube ture vapour pressure variation velocity vessel waves weight wire zero
Popular passages
Page 42 - It is hardly necessary to add that anything which any insulated body, or system of bodies, can continue to furnish without limitation, cannot possibly be a material substance; and it appears to me to be extremely difficult, if not quite impossible, to form any distinct idea of anything capable of being excited and communicated in the manner the Heat was excited and communicated in these experiments, except it be MOTION.
Page 612 - It is impossible for a self-acting machine, unaided by any external agency, to convey heat from one body to another at a higher temperature ; or heat cannot of itself (that is, without compensation) pass from a colder to a warmer body.
Page 612 - It is impossible by means of inanimate material agency to derive mechanical effect from any portion of matter by cooling it below the temperature of the coldest of the surrounding objects.
Page 43 - The immediate cause of the phenomena of heat then is motion, and the laws of its communication are precisely the same, as the laws of the communication of motion.
Page 22 - Thermal unit, is the quantity of heat necessary to raise the temperature of one pound of water, one degree, or from 39° to 4o° Fah.
Page 68 - ... that the total pressure of the mixture is equal to the sum of the pressures that each gas would have exerted if present by itself in the container.
Page 207 - A definite quantity of heat is required to raise the temperature of a given mass of any material by 1 (degree).
Page 43 - Heat, then, or that power which prevents the actual contact of the corpuscles of bodies, and which is the cause of our peculiar sensations of heat and cold, may be defined a peculiar motion, probably a vibration of the corpuscles of bodies, tending to separate them.
Page 40 - But, without insisting on the improbability of this supposition, we have only to recollect that from the results of actual and decisive experiments, made for the express purpose of ascertaining that fact, the capacity for heat of the metal of which great guns are cast is not...
Page 372 - On partially liquefying carbonic acid by pressure alone, and gradually raising at the same time the temperature to 88° Fahr., the surface of demarcation between the liquid and gas became fainter, lost its curvature, and at last disappeared. The space was then occupied by a homogeneous fluid, which exhibited, when the pressure was suddenly diminished or the temperature slightly lowered, a peculiar appearance of moving...