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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Сторінка 22
... paper , to produce black profiles by the action of Light , but he died without disclosing the preparation which he employed ; indeed his countryman the Abbé Moigno admits that Charles left " no authentic document to attest his dis ...
... paper , to produce black profiles by the action of Light , but he died without disclosing the preparation which he employed ; indeed his countryman the Abbé Moigno admits that Charles left " no authentic document to attest his dis ...
Сторінка 23
... paper , to cause them to become dark when ex- posed to the rays of the sun . Besides the applications of this method ... paper . This will probably be a useful application of the method ; that it may be employed successfully , however ...
... paper , to cause them to become dark when ex- posed to the rays of the sun . Besides the applications of this method ... paper . This will probably be a useful application of the method ; that it may be employed successfully , however ...
Сторінка 24
... paper , slowly changed from white to faint violet ; though , under similar circumstances , no immediate alteration was produced upon the nitrate . * * Nothing but a method of preventing the unshaded parts of the delineation from being ...
... paper , slowly changed from white to faint violet ; though , under similar circumstances , no immediate alteration was produced upon the nitrate . * * Nothing but a method of preventing the unshaded parts of the delineation from being ...
Сторінка 53
... paper , such as is sold for foreign correspondence , was stretched on a frame . One side of this paper was black- ened with Indian ink , or , which is better , smoked in the flame of oil of turpentine , or over a smoky candle , by ...
... paper , such as is sold for foreign correspondence , was stretched on a frame . One side of this paper was black- ened with Indian ink , or , which is better , smoked in the flame of oil of turpentine , or over a smoky candle , by ...
Сторінка 54
... paper ; but this is speedily exchanged for a perfect whiteness , marking by a clear and sharp outline the lateral extent of the calorific rays , and by due gradations of intensity , in a longitudinal direction , their law or scale of ...
... paper ; but this is speedily exchanged for a perfect whiteness , marking by a clear and sharp outline the lateral extent of the calorific rays , and by due gradations of intensity , in a longitudinal direction , their law or scale of ...
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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