An Elementary Treatise on Heat |
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Page xiii
... Dark Heat is capable of Reflection 186 • 169 The Heat of Light is Reflected in the same manner as the Light 187 172 Variation of Reflecting Power with Angle of Incidence 188 172 Diffuse Reflection of Heat • 189 172 General Conclusions ...
... Dark Heat is capable of Reflection 186 • 169 The Heat of Light is Reflected in the same manner as the Light 187 172 Variation of Reflecting Power with Angle of Incidence 188 172 Diffuse Reflection of Heat • 189 172 General Conclusions ...
Page xv
... Dark Heat by Different Bodies : - Melloni's Table Remarks on this Table 242 222 · 243 222 244 224 Professor Tyndall's Experiments 245 224 Remarks on these Experiments 246 225 Absorption of Light by Different Bodies : - Selective ...
... Dark Heat by Different Bodies : - Melloni's Table Remarks on this Table 242 222 · 243 222 244 224 Professor Tyndall's Experiments 245 224 Remarks on these Experiments 246 225 Absorption of Light by Different Bodies : - Selective ...
Page 75
... dark lines represent iron , the lighter lines brass or zinc ; and it is evident that the former being at- tached to the upper cross - pieces will ex- pand downwards , while the latter , being attached to the lower cross - pieces , will ...
... dark lines represent iron , the lighter lines brass or zinc ; and it is evident that the former being at- tached to the upper cross - pieces will ex- pand downwards , while the latter , being attached to the lower cross - pieces , will ...
Page 167
... Dark Heat Rays Curve of Intensity of Light LIGHT SPECTRUM Red or . Yel ange Low Green Blue Indigo Violet ical Rays Dark_Chem . trum . Fig . 37 . The ordinates of the curve denote the luminosity for each part , and it will be seen that ...
... Dark Heat Rays Curve of Intensity of Light LIGHT SPECTRUM Red or . Yel ange Low Green Blue Indigo Violet ical Rays Dark_Chem . trum . Fig . 37 . The ordinates of the curve denote the luminosity for each part , and it will be seen that ...
Page 168
... dark lines , which we may for the present dismiss from our con- sideration . If the temperature of the source be high , we have , besides a great deal of dark heat , a good amount of luminosity and a smaller amount of chemical action ...
... dark lines , which we may for the present dismiss from our con- sideration . If the temperature of the source be high , we have , besides a great deal of dark heat , a good amount of luminosity and a smaller amount of chemical action ...
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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.