An Elementary Treatise on Heat |
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Page 1
... means of accurately measuring the amount of heat which a body possesses . The same substance may at the same time appear warm to one indi- vidual and cold to another ; nay , it may even be pronounced warm by one of our hands and cold by ...
... means of accurately measuring the amount of heat which a body possesses . The same substance may at the same time appear warm to one indi- vidual and cold to another ; nay , it may even be pronounced warm by one of our hands and cold by ...
Page 2
... means of making a very convenient and easily perceived classification of the modes in which Heat exhibits itself to us . There is , in the first place , what we may call absorbed heat , which resides in a hot body , and often remains in ...
... means of making a very convenient and easily perceived classification of the modes in which Heat exhibits itself to us . There is , in the first place , what we may call absorbed heat , which resides in a hot body , and often remains in ...
Page 6
... means of a thermometer . Strictly speaking , when the thermometer and the liquid are brought intimately together , a common tempera- ture will be attained , but if the mass of the liquid be very much greater than that of the thermometer ...
... means of a thermometer . Strictly speaking , when the thermometer and the liquid are brought intimately together , a common tempera- ture will be attained , but if the mass of the liquid be very much greater than that of the thermometer ...
Page 7
... means of measuring temperature with great accuracy cannot well be discussed at the outset of this work . These will be given hereafter : in the meantime , let us take it for granted that an air thermometer does really fulfil this ...
... means of measuring temperature with great accuracy cannot well be discussed at the outset of this work . These will be given hereafter : in the meantime , let us take it for granted that an air thermometer does really fulfil this ...
Page 8
... means , on condensation of the vapour , the bulb and tube will be filled with mercury . When the tube is full of mercury it is hermetically sealed , and when the instrument has cooled the mercury ought to fill the bulb and part of the ...
... means , on condensation of the vapour , the bulb and tube will be filled with mercury . When the tube is full of mercury it is hermetically sealed , and when the instrument has cooled the mercury ought to fill the bulb and part of the ...
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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.