Knowledge for the People, Or, The Plain why and Because, 2. köideLilly & Wait, and Carter & Hendee, 1832 |
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acid gas alloy ammonia animal arch argand burner Argand lamp becomes bodies boiling Brande Bromine burning called candle carbonic acid carriage centre charcoal chemical chemistry chlorine coal coal gas coin colour combined combustion common condensed contains copper crystals cubic feet cylinder diamond earth effect electricity employed equal evaporation experiments exposed fire flame fluid force friction furnace gaseous glass gold heat Hence horse hydrocyanic acid hydrogen hydrogen gas inch increased inflammable invention iron lamp lead less lever light lime liquid machine manufacture mass matter mechanical melted mercury metal miles minute mixture motion muriatic acid nature nearly nitric acid oxide oxygen particles pass pendulum phosphorus pieces plate platinum pound pressure produced proportion pure quantity resistance salt silver Sir Humphry Sir Humphry Davy solid steam steam-engine steel stone substances sulphuric acid surface temperature tion tons vapour velocity vessel weight wheel wool yards
Popular passages
Page 130 - shall thy arm, unconquer'd steam, afar Drag the slow barge or drive the rapid car; Or on wide-waving wings expanded bear ; The flying chariot through the fields of air...
Page 106 - The first feelings were similar to those produced in the last experiment; but in less than half a minute, the respiration being continued, they diminished gradually, and were succeeded by a sensation analogous to gentle pressure on all the muscles, attended by a highly pleasurable thrilling, particularly in the chest and the extremities.
Page 61 - ... of the caprice of human appetite : yet, if the fisherman will ply his nets, or the mariner fetch rice from foreign countries, in order to procure to himself this indulgence, the market is supplied with two important articles of provision, by the instrumentality of a merchandise which has no other apparent use than the gratification of a vitiated palate.
Page 7 - ... ultimately gave the preference to a mixture of four ounces of nitrate of ammonia, four ounces of sub-carbonate of soda, and four ounces of water. This mixture, in three hours, produced ten ounces of ice ; whilst, with the mixture of sulphate of soda and muriatic acid, he obtained ice only after seven hours.
Page 68 - Apothecaries profit is become a bye-word, denoting something uncommonly extravagant. This great apparent profit, however, is frequently no more than the reasonable wages of labour. The skill of an apothecary is a much nicer and more delicate matter than that of any artificer whatever ; and the trust which is reposed in him is of much greater importance. He is the physician of the poor in all cases, and of the rich when the distress or danger is not very great.
Page 45 - ... matter : and the fact is proved, by holding a taper or a piece of burning phosphorus within a large flame, made by the combustion of alcohol, the flame of the candle or of the phosphorus will appear in the centre of the other flame, proving that there is oxygen, even in its interior part...
Page 46 - With so great a facility and celerity of communication, the provincial towns of an empire would become so many suburbs of the metropolis — or rather the effect would be similar to that of collecting the whole inhabitants into one city. Commodities, inventions, discoveries, opinions, would circulate with a rapidity hitherto unknown, and, above all, the intercourse of man with man, nation with nation, and province with province, would be prodigiously increased.
Page 39 - Buchanan that the same quantity of human labour employed in working a pump, turning a winch, ringing a bell, and rowing a boat, are as the numbers 100, 167, 227, and 248. The most advantageous manner of applying human strength is in the act of rowing.
Page 92 - ... of your inquiry, I shall not dwell upon them. In general, in examining lakes and masses of water in high mountains, their colour is of the same bright azure. And Captain Parry states, that the water on the Polar ice has the...
Page 61 - A watch may be a very unnecessary appendage to the dress of a peasant ; yet if the peasant will till the ground in order to obtain a watch, the true design of trade is answered...