Researches on Light in Its Chemical Relations: Embracing a Consideration of All the Photographic ProcessesLongman, Brown, Green, and Longmans, 1854 - 396 стор. |
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... minute atoms in swift motion , which , by their smallness and rapi- dity , were able to permeate the hardest bodies . ( 9. ) " The sun's rays , " Homberg at a much later period says , " will insinuate themselves into bodies so as ...
... minute atoms in swift motion , which , by their smallness and rapi- dity , were able to permeate the hardest bodies . ( 9. ) " The sun's rays , " Homberg at a much later period says , " will insinuate themselves into bodies so as ...
Сторінка 11
... minutes , while the red rays required twenty minutes , and the other colours various intermediate periods . * The bleaching of wax by exposure to the solar rays became also the subject of Senebier's investigations . It became about this ...
... minutes , while the red rays required twenty minutes , and the other colours various intermediate periods . * The bleaching of wax by exposure to the solar rays became also the subject of Senebier's investigations . It became about this ...
Сторінка 19
... minutes without apparent change . When , however , the mixture was transferred from the red vessel to a white one it combined instantly in sunshine , without any explosion . This evidently indicates some physical change , such as we ...
... minutes without apparent change . When , however , the mixture was transferred from the red vessel to a white one it combined instantly in sunshine , without any explosion . This evidently indicates some physical change , such as we ...
Сторінка 21
... minutes . " This is the earliest intimation we have of any indication that the luminous and chemical powers may be due to dissimilar agencies . On this , the Commissioners remark : - " If we wish to consider solar light as composed of ...
... minutes . " This is the earliest intimation we have of any indication that the luminous and chemical powers may be due to dissimilar agencies . On this , the Commissioners remark : - " If we wish to consider solar light as composed of ...
Сторінка 22
... minutes are sufficient to produce the full effect ; in the shade several hours are re- quired , and Light transmitted through different coloured glasses , acts upon it with different degrees of intensity . Thus it is found that red rays ...
... minutes are sufficient to produce the full effect ; in the shade several hours are re- quired , and Light transmitted through different coloured glasses , acts upon it with different degrees of intensity . Thus it is found that red rays ...
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absorption actinic ammonia appears Becquerel bleaching blue rays bodies brown calorific rays calotype camera obscura carbonic acid chemical action chemical change chemical rays chloride of silver chromate colour combination copper Daguerreotype dark darkened dissolved distilled water dried effect employed evident experiments exposed exposure ferrocyanide fluid formed gallic acid germination gold green rays heat hyposulphite of soda impression influence intensity invisible iodide of silver iodine iron least refrangible Light luminous rays mercury metallic minutes Niepce nitrate of silver nitric acid observed obtained oxide oxygen paper peculiar phenomena photographic picture placed plants plate portion potash potassium precipitate prepared prism prismatic spectrum produced quantity quinine radiations red rays refrangible rays remarkable rendered salts of silver sensitive Sir John Herschel solar rays solution of nitrate space sun's rays sunshine surface tint tion uranium glass vapour vegetable violet rays visible washed yellow ray