Chemical News and Journal of Industrial Science, Volúmenes19-20Chemical news office., 1869 |
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Página 12
... minutes , according to temperature ; 50 minutes will be found sufficient in summer . ) When the silvering is completed , remove the speculum from the solution , and immediately wash with plenty of water , using at least two gallons ...
... minutes , according to temperature ; 50 minutes will be found sufficient in summer . ) When the silvering is completed , remove the speculum from the solution , and immediately wash with plenty of water , using at least two gallons ...
Página 15
... minute or two that a considerable action is taking place ; you will observe that the vinegar will become covered with froth . Now in this case the marble , which would not dissolve in water , is dissolving in the vinegar , and not only ...
... minute or two that a considerable action is taking place ; you will observe that the vinegar will become covered with froth . Now in this case the marble , which would not dissolve in water , is dissolving in the vinegar , and not only ...
Página 16
... minute or two , for we are now performing the experiment on a somewhat large scale , while in the other case we performed it on a small scale . This effervescence consists in the forma- tion of bubbles of air beneath the surface of the ...
... minute or two , for we are now performing the experiment on a somewhat large scale , while in the other case we performed it on a small scale . This effervescence consists in the forma- tion of bubbles of air beneath the surface of the ...
Página 17
... minute or two , that it may become a little cooler ; at present it is so hot that I am not well able to bear my hand ... minute or two . It already gets very hot ; and if I place upon this mass of residue that has been left after the ...
... minute or two , that it may become a little cooler ; at present it is so hot that I am not well able to bear my hand ... minute or two . It already gets very hot ; and if I place upon this mass of residue that has been left after the ...
Página 27
... minute or two , and gas issue from the earth with enormous force . you see our lime - water is converted into chalk , Indeed , so great is the quantity , that it is and , therefore , we find that ordinary gas also probable that the ...
... minute or two , and gas issue from the earth with enormous force . you see our lime - water is converted into chalk , Indeed , so great is the quantity , that it is and , therefore , we find that ordinary gas also probable that the ...
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Términos y frases comunes
acetic acetic acid action alcohol alkali ammonia amount analysis apparatus appears atomic becomes boiling bottle burning carbonic acid carbonic gas cent charcoal chemical Chemistry chemists chloric acid chloride coal colour combustion composition compounds containing copper coumarin crystallisation crystals decomposed decomposition dilute dissolved distillation electric ether experiments Faraday filter flame flask fluid furnace fuses gases give glass grammes graphite grms heat hydrochloric acid hydrogen hydrogenium ignition insoluble iodide iron lecture light lime liquid manufacture marble means mercury metal method mineral mixture nitrate nitric acid nitrogen observed obtained ordinary organic matter oxalic oxide oxidised oxygen palladium paper phosphate phosphorus platinum potash potassa potassium powder precipitate present produced Professor quantity Royal salt silicate silver Society soda sodium soluble solution specific gravity spectrum steel substance sugar sulphate sulphide sulphuric acid temperature tion titanic acid tube vapour vessel weight wire zinc zircons
Pasajes populares
Página 12 - Chemistry, Medicine, Surgery, and the Allied Sciences. A Dictionary of Chemistry and the Allied Branches of other Sciences.
Página 286 - Edition, for the most part re-written, with all the recent Discoveries incorporated, by W.
Página 28 - SOUND : a Course of Eight Lectures delivered at the Royal Institution of Great Britain. By JOHN TYNDALL, LL.DFRS New Edition, crown 8vo.
Página 30 - If the place which the LORD thy God hath chosen to put his name there be too far from thee, then thou shalt kill of thy herd and of thy flock, which the LORD hath given thee, as I have commanded thee, and thou shalt eat in thy gates whatsoever thy soul lusteth after.
Página 31 - It thundered, and an oak was struck -with lightning on that part of Mount Palatine called Summa Velia, early in the afternoon. A fray happened in a tavern at the lower end of the / Banker's * Street, in which the keeper of the hog in armour tavern, was dangerously wounded.
Página 7 - Stevenson, president, in the chair. The minutes of the previous meeting having been read and confirmed, Mr.
Página 14 - ... the earth undergoes, owing to the fall of the water, gives rise to motion, which afterwards disappears again, calling forth unceasingly a great quantity of heat; and inversely, the steamengine serves to decompose heat again into motion or the raising of weights. A locomotive engine with its train may be compared to a distilling apparatus ; the heat applied under the boiler passes off as motion, and this is deposited again as heat at the axles of the wheels.
Página 23 - Act, to any person unknown to the seller, unless introduced by some person known to the seller ; and on every sale of...
Página 168 - I have been perfectly enchanted with the sight which my spectroscope has revealed to me. The solar and atmospheric spectra being hidden, and the image of the wide slit alone being visible, the telescope or slit is moved slowly, and the strange shadow-forms flit past.
Página 12 - Heat is a very brisk agitation of the insensible parts of the object, which produces in us that sensation, from whence we denominate the object hot ; so what in our sensation is heat, in the object is nothing but motion.