Annals of Philosophy, 8권;24권Baldwin, Cradock, and Joy, 1824 |
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37 페이지
... nitrate of cobalt , we can readily ascertain the presence of silica , alumina , magnesia , and almost all the fixed metallic oxides ; and by the further examination of the fused globule , especially that with carbonate of soda , by ...
... nitrate of cobalt , we can readily ascertain the presence of silica , alumina , magnesia , and almost all the fixed metallic oxides ; and by the further examination of the fused globule , especially that with carbonate of soda , by ...
38 페이지
... nitrate of cobalt , the assay gives a fine blue colour , intensely deep on the fused edges . By dissolving the soda globule in muriatic acid , & c . I obtained silica , alumina , lime , iron , and manganese . The latrobite is ...
... nitrate of cobalt , the assay gives a fine blue colour , intensely deep on the fused edges . By dissolving the soda globule in muriatic acid , & c . I obtained silica , alumina , lime , iron , and manganese . The latrobite is ...
39 페이지
... nitrate of cobalt , dirty - rose colour ; the fused edges purple . From the last result , the grey substance appears to contain a considerable portion of magnesia . I hope before long to give the analysis of the three preceding minerals ...
... nitrate of cobalt , dirty - rose colour ; the fused edges purple . From the last result , the grey substance appears to contain a considerable portion of magnesia . I hope before long to give the analysis of the three preceding minerals ...
44 페이지
... nitrates of copper and lead give similar results for a short time ; nitrate of zinc produces no such effect . When the experiment is made in an atmosphere of hydrogen , no electrical current is established , though all circumstances ...
... nitrates of copper and lead give similar results for a short time ; nitrate of zinc produces no such effect . When the experiment is made in an atmosphere of hydrogen , no electrical current is established , though all circumstances ...
45 페이지
... nitrate of zinc does not produce any current , although it contains deutoxide of azote and nitrous gas , it is probable that this may be owing to the nitrate not suffering any change by contact with the air , in consequence of the metal ...
... nitrate of zinc does not produce any current , although it contains deutoxide of azote and nitrous gas , it is probable that this may be owing to the nitrate not suffering any change by contact with the air , in consequence of the metal ...
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acetic acid action alcohol alkali alumina ammonia Annals of Philosophy antimony appears ARTICLE ascertained atom barometer barytes beds blue boiling bulb carbonate of lime carbonic acid chalk chloride clay colour combined compound conductor contains copper crystals decomposed deposited dissolved distilled effect electricity evaporation examination experiments filtered fluate of lime fluid fluoric acid glass globule grains gramme green heat hydrogen hydrogen gas ignition insoluble limestone liquid magnesia manganese mass matter mercury metal mineral minute muriatic acid neutral nitrate nitric acid nitrous observed obtained oxide of copper oxide of iron oxygen paper paratonnerre peroxide of copper phosphate phosphorus plate pole portion potash precipitate produced proportion quantity radiation red sandstone sand selenium silica soda soluble solution specific gravity specimens sprudelstone substance sulphate sulphuric acid surface temperature thermometer tion tube vapour verdigris vessel volume water of crystallization weight wire zinc
인기 인용구
468 페이지 - ... axis of the prism. It must then be placed upon a piece of well polished glass, and the glass heated to a considerable degree. At the proper temperature, which is about that of boiling water, the slice will adhere to the glass so firmly, that even when the...
397 페이지 - ... noisome effluvia ; during its continuance the fish float quite helpless on the turbid surface, and are easily taken. These rapid changes (as capricious in their nature as those of the Euripus), generally continue from thirty minutes to upwards of two hours ; and are succeeded by a breeze from the southward, which quickly increases to heavy gusts.
279 페이지 - ... appeared in chemistry. When we see energies so intense exerted by the ordinary forms of matter, we may...
97 페이지 - A piece of zinc as large as a pea, or the point of a small iron nail, were found fully adequate to preserve forty or fifty square inches of copper ; and this, wherever it was placed, whether at the top, bottom, or in the middle of the sheet of copper, and whether the copper was straight or bent, or made into coils. And where the connection between...
184 페이지 - A thick glass, though as much or more permeable to light than a thin glass of worse quality, allows a much smaller quantity of radiant heat to pass.
295 페이지 - In this instance the loss of sight was toward my left, and was the same whether I looked with the right eye or the left. This blindness was not so complete as to amount to absolute blackness, but was a shaded darkness without definite outline. The complaint was of short duration, and in about a quarter of an hour might be said to be wholly gone, having receded with a gradual motion from the centre of vision obliquely upwards towards the left.
428 페이지 - ... a moist soil. The wire indeed would pretty certainly be dispersed by the lightning, but it would direct it to the ground, and protect the surrounding objects from the stroke. However, it is always better to make the conductor so large as not to be destroyed by the stroke ; and the only motive for substituting a wire for a stout bar is the saving in point of expense. The noise of the thunder generally occasions much alarm, although the danger is then...
237 페이지 - The Century of Inventions of the Marquis of Worcester, from the original MSS. with Historical and Explanatory Notes, and a Biographical Memoir; by Charles F.
97 페이지 - ... form seven divisions, connected only by the smallest filaments that could be left, and a mass of zinc, of the fifth of an inch in diameter, was soldered to the upper division. The whole was plunged under sea water; the copper remained perfectly polished. The same experiment was made with iron ; and now, after a lapse of a month, in both instances, the copper is as bright as when it was first introduced, whilst similar pieces of copper, undefended, in the same...
296 페이지 - ... affection occurred again to myself, without my being able to assign any cause. whatever, or to connect it with any previous or subsequent indisposition. The blindness was first observed, as before, in looking at the face of a person I met, whose left eye was to my sight obliterated. My blindness was in this instance the reverse of the former, being to my right (instead of the left) of the spot to which my eyes were directed ; so that I have no reason to suppose it in any manner connected with...