Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3767Chemical news office., 1932 |
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Strona 422
... colour on exposure , research was being made for a resin which would not suffer discoloration , and also which would resist the action of water . Specimens of synthetic resins were shown , one in particular being of great interest ...
... colour on exposure , research was being made for a resin which would not suffer discoloration , and also which would resist the action of water . Specimens of synthetic resins were shown , one in particular being of great interest ...
Strona 423
... colour so as to enable the manu- facture of such glasses to be placed upon a sounder basis . Existing theories of the cause of the colour in gold , copper , and selenium rubies were briefly indicated , then the speaker described the ...
... colour so as to enable the manu- facture of such glasses to be placed upon a sounder basis . Existing theories of the cause of the colour in gold , copper , and selenium rubies were briefly indicated , then the speaker described the ...
Strona 424
... colour of the final solution being measured in the Lovibond tintometer . Separation of aluminium from the " wet ash " of the foodstuff is effected by a preliminary pre- cipitation with ammonia , the aluminium being obtained in alkaline ...
... colour of the final solution being measured in the Lovibond tintometer . Separation of aluminium from the " wet ash " of the foodstuff is effected by a preliminary pre- cipitation with ammonia , the aluminium being obtained in alkaline ...
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acid actual aluminium amount associated atomic attraction battery bodies carried caused cell changes charge chemical action chemical affinity chemistry chloride colour compared conductivity connected contained Davy decompose decomposition dependent described detect Determination direct effect electricity electro-chemical electrolysis equal equivalent evolved examination experimental experiments Faraday Faraday's floor follows force fused gave given glasses greater heat Hence hydrogen ideas important inches intensity interest June Laboratory later lead liberated London machine magnetic materials matter means measure Member ment metals methods nature observed obtained Office particles passes Patent platinum points poles positive present Price problem production Professor proved published quantity quantity of electricity reaction relation researches resins result Royal Institution ruby salts scientific selenium September showed shown solution steel substances sulphuric acid teeth temperature theory tion Trade turns unit varied various voltaic volume weight wires wrote zinc