An elementary dictionary, or cyclopędię, for the use of maltsters, brewers [&c.]. (Google eBook)

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Page 184 - ... of heat to a considerable amount, and you constitute a vapour : next abstract a sufficient quantity of heat, as will enable the ponderable atoms in obedience to the law of attraction, to approximate close to each other but not cohere, and you then constitute a fluid ; continue the abstraction of heat until the ponderable atoms cohere, and then you constitute a solid. These analytical and synthetical operations may be illustratively performed on ice as the basis of the first process ; and by an...
Page 262 - We know now that the underlying principle is the same as in a mercurial barometer : it is the pressure of the atmosphere on the surface of the water in the well that pushes the water up into the pump.
Page 261 - Because the pressure of the atmosphere is equal to the weight of a column of water 33 feet deep.
Page 208 - An ounce of prevention is better than a pound of cure" is an old truth, and exceedingly well appliable to sheep husbandry.
Page 328 - ... being liberated, is rendered ready for its impartation to other bodies ; and we have next to review the principle of impartation by which such heat is transmitted from the furnace to the boiler, and from the boiler to the water within it. Heat in a state of freedom is subject to two laws, a primary and secondary — the primary termed equal diffusion, and the secondary recession from the centre of the earth, or gravitation towards the centre of the sun. The heat liberated from the decomposed...
Page 332 - If steam is generated to an amount just sufficient to occupy the space between the water within the boiler and its upper portion, and the safety and eduction valves are closed, and the temperature of the water and steam within the boiler, and the metal composing the boiler, are at 212 degrees of heat, and no more heat is imparted, and the safety or eduction valves are then opened, it will be found, that the steam which has been generated will evolate from the Steam.
Page 188 - The carbonic acid is formed in the body by the combination of the oxygen of the air with the carbon of the blood.
Page 331 - ... raised by such imaginary lever, the sustaining boiler may be compared to the fulcrum of such lever, and which if not of sufficient strength to sustain the force of pressure exerted upon it by the impulsive and resisting powers, its disruption- necessarily ensues. We conceive also that the amount of the motive power of steam which is generated within the boiler, previous to its bursting, or its exit by the safety or eduction valves, is no more than the difference between its specific gravity and...
Page 333 - ... will pass through them ; and the force with which the steam generated will pass, will be proportionate to the difference in the amount created, which would pass in virtue of its lesser specific gravity than the atmosphere, and which will be able to pass impulsively. And what is the impulsive power ? The heat imparted from the fuel to the boiler, and from the boiler to the water. But it is said, that neither water nor steam can receive any more heat after it has attained to the thermometic temperature...
Page 241 - ... to produce carbonic acid, by the union of the oxygen of the atmosphere with the carbon of the coke : this is accompanied with the intense heat required for the fusion of the iron ore. The carbonic acid, as it passes upwards, is converted into carbonic oxide, by contact with the carbon of the incandescent coke above the zone of fusion. As the carbonic oxide ascends higher in the furnace, it...

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