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 9
... employed in Photography , - carefully settled by Scheele in 1777 , although his object was to prove that the inflammable principle " phlogiston existed in Light . " It is well known , " says Scheele , " that the solution of silver in ...
... employed in Photography , - carefully settled by Scheele in 1777 , although his object was to prove that the inflammable principle " phlogiston existed in Light . " It is well known , " says Scheele , " that the solution of silver in ...
Сторінка 20
... employ reactions still more sensible he would have observed analogous effects , but still more feeble , even in the other rays . To show clearly the great disproportion which exists in this respect between the energies of different rays ...
... employ reactions still more sensible he would have observed analogous effects , but still more feeble , even in the other rays . To show clearly the great disproportion which exists in this respect between the energies of different rays ...
Сторінка 22
... employed ; indeed his countryman the Abbé Moigno admits that Charles left " no authentic document to attest his dis- covery . " Mr. Wedgwood made use of white paper , or white leather , moistened with a solution of nitrate of silver ...
... employed ; indeed his countryman the Abbé Moigno admits that Charles left " no authentic document to attest his dis- covery . " Mr. Wedgwood made use of white paper , or white leather , moistened with a solution of nitrate of silver ...
Сторінка 23
... employed , it is not sensibly affected . No attempts that have been made to prevent the uncoloured parts of the copy or profile from being acted upon by Light have as yet been successful . They have been covered with a thin coating of ...
... employed , it is not sensibly affected . No attempts that have been made to prevent the uncoloured parts of the copy or profile from being acted upon by Light have as yet been successful . They have been covered with a thin coating of ...
Сторінка 29
... by 51 inches ; it is stated at the back to have been taken from a print about 2 feet long . The picture represents the ruins of an abbey : in a pro . per light it is very distinct . the process employed by him , and they entered into.
... by 51 inches ; it is stated at the back to have been taken from a print about 2 feet long . The picture represents the ruins of an abbey : in a pro . per light it is very distinct . the process employed by him , and they entered into.
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Загальні терміни та фрази
actinic ammonia appears Becquerel bleaching blue rays bodies brown calotype camera obscura carbonic acid chemical action chemical change chemical rays chloride of silver chromate colour combination copper Daguerreotype dark darkened distilled water dried Edition effect Engravings evident experiments exposed exposure ferrocyanide fluid formed gallic acid germination glass gold green rays heat hyposulphite of soda impression indigo influence intensity iodide of silver iodine iron least refrangible Light luminous rays mercury metallic minutes Niepce nitrate of silver nitric acid observed obtained orange oxide oxygen paper peculiar phenomena photographic picture placed plants plate portion Post 8vo potash potassium precipitate prepared prism prismatic spectrum produced quantity quinine radiations red rays refrangible rays remarkable 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 vols washed Woodcuts yellow ray
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