An Elementary Treatise on Heat |
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Page 49
... unit volumes from o ° to 1 ° C , and where a , b , c are constants depending on the nature of the substance . This expression , he finds , generally repre- sents the expansion of a liquid with considerable accuracy . We derive from his ...
... unit volumes from o ° to 1 ° C , and where a , b , c are constants depending on the nature of the substance . This expression , he finds , generally repre- sents the expansion of a liquid with considerable accuracy . We derive from his ...
Page 55
... unit of volume ) of air whose pres- sure remains constant . For let D denote the mass of air that occupies unit of volume at o ° C ; this mass will at t ° occupy a volume equal to 1 + a t , and hence the mass of unit volume or the ...
... unit of volume ) of air whose pres- sure remains constant . For let D denote the mass of air that occupies unit of volume at o ° C ; this mass will at t ° occupy a volume equal to 1 + a t , and hence the mass of unit volume or the ...
Page 58
... unit volume under unit of pressure at the temperature o ° C . = Then DPV ( according to Boyle's law ) will denote the mass of that portion of the enclosed air existing in the bulb ( volume V ) at the temperature o ° C and under the ...
... unit volume under unit of pressure at the temperature o ° C . = Then DPV ( according to Boyle's law ) will denote the mass of that portion of the enclosed air existing in the bulb ( volume V ) at the temperature o ° C and under the ...
Page 65
... unit of length , and if it be inconvenient or impossible to make this comparison at 62 ° Fahr . , it will be necessary to know the precise temperature of our standard bar in order that we may know its real length . The formation of a ...
... unit of length , and if it be inconvenient or impossible to make this comparison at 62 ° Fahr . , it will be necessary to know the precise temperature of our standard bar in order that we may know its real length . The formation of a ...
Page 71
... unit of volume of this liquid at o ° C will become 1.00298 at 62 ° Fahr . , or 16 ° .6C . Hence the weight of the above volume of mercury would at o ° C be 13590.86 x 1.00298 13631.361 grains . - In like manner we find by the table of ...
... unit of volume of this liquid at o ° C will become 1.00298 at 62 ° Fahr . , or 16 ° .6C . Hence the weight of the above volume of mercury would at o ° C be 13590.86 x 1.00298 13631.361 grains . - In like manner we find by the table of ...
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Common terms and phrases
absorbs absorption acid amount of heat antimony aqueous vapour atmosphere bismuth body boiling point Boyle's law Bromine bulb calorimeter carbon carbonic acid chemical coefficient cold colour column condensed conductivity constant temperature dark heat denote density dilatation Dulong and Petit electric enclosure energy equal ether evaporation excess of temperature expansion experiments Fahr flow of heat freezing galvanometer gases Gay Lussac glass gravity heating effect hence high temperature inches of mercury increase instrument iron lamp-black latent heat light liquid luminous means melting metals method millimètres nearly nitrous oxide observed obtained particles pass perature plate polarized pound pressure produced quantity of heat radiant heat radiation rays reflected refrangibility regard Regnault result rock salt shew shewn solid source of heat specific gravity specific heat steam substance suppose surface thermometer tourmaline tube vacuo velocity of cooling vessel volume wave length weight
Popular passages
Page 304 - That the quantity of heat produced by the friction of bodies, whether solid or liquid, is always proportional to the quantity of force expended.
Page 66 - The straight line or distance between the centres of the transverse lines in the two gold plugs in the bronze bar deposited in the Office of the Exchequer shall be the genuine standard of length at 62° F., and if lost it shall be replaced by means of its copies.
Page 66 - May one thousand eight hundred and twenty-five, the Straight Line or Distance between the Centres of the Two Points in the Gold Studs in the Straight Brass Rod, now in the Custody of the Clerk of the House of Commons, whereon the Words and Figures
Page 80 - ... passing from the solid to the liquid, and from the liquid to the gaseous form, or the contrary, occasioning endless vicissitudes of temperature over the globe.
Page 82 - ... thermometer, this will very often be sufficient to produce solidification, if not drop in a small crystal. The mass solidifies at once and the temperature rises very considerably. 112. Laws of Fusion. We may thus sum up our results with the following laws of fusion. (1) A substance begins to melt at a temperature, which is constant for the same substance, if the pressure be constant, and is called the melting-point.