The Chemical News and Journal of Physical Science, Volúmenes33-34Griffin, Bohn and Company, 1876 |
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Página 1
... heat - produced allotropic modification , the granular variety , or as it has been felicitously called by Regnault , metallic selenium . Vitreous selenium has no definite point of fusion . At temperatures exceeding 60 ° C. it softens ...
... heat - produced allotropic modification , the granular variety , or as it has been felicitously called by Regnault , metallic selenium . Vitreous selenium has no definite point of fusion . At temperatures exceeding 60 ° C. it softens ...
Página 2
... heat : indeed , he says that could it be heated red hot its conductivity would not be inferior to that of the metals . Our own ex- periments confirm the diminution of conductivity by heat , but we have found , in at least one ...
... heat : indeed , he says that could it be heated red hot its conductivity would not be inferior to that of the metals . Our own ex- periments confirm the diminution of conductivity by heat , but we have found , in at least one ...
Página 4
... heat : indeed , cipitation of selenium from dilute solutions of selenious he says that could it be heated red hot its conductivity acid by sulphurous acid ; and Hittorf , while noting the would not be inferior to that of the metals ...
... heat : indeed , cipitation of selenium from dilute solutions of selenious he says that could it be heated red hot its conductivity acid by sulphurous acid ; and Hittorf , while noting the would not be inferior to that of the metals ...
Página 6
... heat so lost be termed r . Secondly , the instrument is turned to the sun for five minutes ; let the heat so gained be termed R. Thirdly , the instrument being row hotter than it was in the first operation , is turned once more so as to ...
... heat so lost be termed r . Secondly , the instrument is turned to the sun for five minutes ; let the heat so gained be termed R. Thirdly , the instrument being row hotter than it was in the first operation , is turned once more so as to ...
Página 10
... heat , for the observed heat is always higher than the calculated temperature . This source of heat is doubtless found in the aqueous vapours of the atmosphere . Does the Mould developed on Organic Bodies assimilate the Nitrogen of the ...
... heat , for the observed heat is always higher than the calculated temperature . This source of heat is doubtless found in the aqueous vapours of the atmosphere . Does the Mould developed on Organic Bodies assimilate the Nitrogen of the ...
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acetic acetic acid action al-Khazini alcohol alizarin alkali ammonia ammonium amount analysis anemometer aniline aniline-black anthracen apparatus bilirubin biliverdin body boiling bromine calcium carbonic acid caustic cent Chemical Society chemistry chemists chlorate chloride colour compound condensation containing copper crystallisation cyanide cyanogen decomposed decomposition described dilute dissolved distilled electricity employed ether evaporation examination experiments filter filtrate furnace gases give glass grms heat hydrate hydrochloric acid hydrogen Improvements inches insoluble iron kilos light lime liquid litre London manganese manufacture matter means mercury metal meteorites method mixture nitrate nitric acid nitrogen observed obtained ordinary oxide oxidised oxygen paper passed phosphate phosphoric acid platinum potash potassium precipitate present produced Prof pure quantity radiometer reaction researches residue Royal salt sample selenium soda sodium soluble solution substance sugar sulphate sulphide sulphuric acid temperature tion tube vanadium vapour whilst zinc
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