Researches on Light in Its Chemical Relations: Embracing a Consideration of All the Photographic ProcessesLongman, 1854 - 396 стор. |
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Сторінка 72
... precipitate was formed . The precipitate from nitric acid by potash was dark brown . The general characters of this oxide were the same as those of the suboxide of silver examined by M. Wöhler . ( 101. ) After having removed as much as ...
... precipitate was formed . The precipitate from nitric acid by potash was dark brown . The general characters of this oxide were the same as those of the suboxide of silver examined by M. Wöhler . ( 101. ) After having removed as much as ...
Сторінка 75
... precipitate of pure metal took place by exposure to the sun's rays . He inferred from this , that the " chemical ... precipitation of the silver from the nitrate in solution takes place very speedily under the influence of the solar rays ...
... precipitate of pure metal took place by exposure to the sun's rays . He inferred from this , that the " chemical ... precipitation of the silver from the nitrate in solution takes place very speedily under the influence of the solar rays ...
Сторінка 76
... precipitation . Such can scarcely be said to have been the case : the solution was repeatedly tested with litmus paper , without detecting any decided effect , even after the entire length of the exposure . ( 113. ) It was with ...
... precipitation . Such can scarcely be said to have been the case : the solution was repeatedly tested with litmus paper , without detecting any decided effect , even after the entire length of the exposure . ( 113. ) It was with ...
Сторінка 79
... precipitate , and then dried . Five grains of the salt were put into a long test tube full of distilled water , and placed in the sunshine to darken , the powder being frequently moved that every part might be acted upon by the sun's ...
... precipitate , and then dried . Five grains of the salt were put into a long test tube full of distilled water , and placed in the sunshine to darken , the powder being frequently moved that every part might be acted upon by the sun's ...
Сторінка 96
... precipitate falls , which must be separated by the filter . This solution must be applied with a very soft sponge brush , boldly , but lightly , over one surface , and the paper carried directly into the sunshine . It is instantly ...
... precipitate falls , which must be separated by the filter . This solution must be applied with a very soft sponge brush , boldly , but lightly , over one surface , and the paper carried directly into the sunshine . It is instantly ...
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Загальні терміни та фрази
absorption actinic action of Light ammonia appears Becquerel bleaching blue rays brown calotype camera obscura carbonic acid chemical action chemical rays chloride of silver chromate collodion COLLODION PROCESS colour combination copper Daguerréotype dark darkened distilled water dried Edition effect employed Engravings experiments exposed exposure ferrocyanide fluid formed gallic acid germination gold green rays guaiacum heat hyposulphite of soda impression influence intensity iodide of silver iodine iron least refrangible luminous rays mercury metallic Niepce nitrate of silver nitric acid observed obtained orange oxide oxygen paper peculiar phenomena photographic picture placed plants 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 yellow ray
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