The Phenomena and Laws of HeatGeneral phenomena of heat -- On experimental method and the thermometer -- Sources of heat -- The radiation of heat -- Conduction on heat -- Change of the volume of bodies -- On fusion and solidification -- Concerning evaporation and ebullition -- On the three states of matter, and on the artificial methods of producing cold -- Heat upon the terrestrial. |
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Common terms and phrases
absorbed acid gas action of heat alcohol apparatus atmosphere atoms become body boil bubble of air bulb camphor carbonic acid causes celestial spaces charcoal combustion compressed condenses consequence consumed contained cooling copper crystals cylinder earth ebullition effect equal ether evaporation example expansion experiment exterior Fahrenheit fall filled fire flame flask freezing fusion gases geyser glacier glass globe grammes heat disengaged heat of fusion interior iron kilogramme less light LIQUEFACTION OF GASES liquid mass mechanical melted mercury metal metres millimetre molecules motion natural observed oxygen perature phenomena phenomenon piece of ice piston pressure produced quantity of heat radiation remains reservoir resistance rise sensible heat separate sides snow solar rays solid solidification source of heat spheroidal substances sufficient sulphurous acid supposed surface surrounding takes place temperature thermal units thermometer tion tube vaporisation vapour of water vessel volatile Voltaic pile volume warm weight whilst zero
Popular passages
Page 209 - Over the surface curls a light vapor; the water is of the purest azure, and tints with its lovely hue the fantastic incrustations on the cistern walls; while at the bottom is often seen the mouth of the once mighty geyser. There are in Iceland vast, but now extinct geyser operations.
Page 255 - F.), which is not greater than that of Cairo and all Lower Egypt. " The difference between the mean temperature of the hottest month and that of the coldest is 12° C.
Page 90 - A luminous band composed of seven magnificent colours is displayed on the screen in the following order : — Violet, indigo, blue, green, yellow, orange, red. The...
Page 81 - Have you ever seen this stone in the chemist's shops, the beautiful and transparent one, from which they kindle fire? SOCRATES. Do you mean the burning-glass? STREPSIADES. I do. Come what would you say, pray, if I were to take this, when the clerk was entering the suit, and were to stand at a distance, in the direction of the sun, thus, and melt out the letters of my suit?
Page 212 - ... dropped : the light of a candle can then be distinctly seen through the thin stratum of vapour, as represented in the engraving, though of course, the distance between the spheroid of water and the capsule is exaggerated. The theory for our purpose is this : the hand of the operator, having been very carefully moistened with a very volatile liquid, such as alcohol or ether, is to be plunged rapidly, and with a certain kind of adroitness, into the molten metal. In some cases the natural humidity...
Page 156 - Unit" is the amount of heat necessary to raise a pound of water one degree. In the column marked "Heat of Vaporization...
Page 67 - Professor Thomson has calculated that the quantity of matter which should fall every year upon the sun so as to maintain its temperature, would form on its surface a bed 66 feet in thickness. The bulk of the sun would therefore gradually increase, and it would result from this that, in...
Page 262 - ... that the glaciers augment in consequence of the suppression of the solar heat, is the same as trying to increase the distilling powers of a distillatory apparatus, by diminishing the fire under the boiler. Solar heat could not therefore have been less active in the glacial epoch than at present.