Researches on Light in Its Chemical Relations: Embracing a Consideration of All the Photographic ProcessesLongman, 1854 - 396 стор. |
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Сторінка 82
... allowed to dry . Ten grains of the iodide of potassium dissolved in the same quantity of water , is next to be applied , and the paper quickly dried near the fire , care being taken , not to warm it too much , as heat changes this salt ...
... allowed to dry . Ten grains of the iodide of potassium dissolved in the same quantity of water , is next to be applied , and the paper quickly dried near the fire , care being taken , not to warm it too much , as heat changes this salt ...
Сторінка 83
... does not keep long without spoiling . Mr. Talbot calls this mixture the gallo - nitrate of silver . tion must be washed over the iodized paper This solu- on the side marked , and , being allowed to remain upon it G 2.
... does not keep long without spoiling . Mr. Talbot calls this mixture the gallo - nitrate of silver . tion must be washed over the iodized paper This solu- on the side marked , and , being allowed to remain upon it G 2.
Сторінка 84
... allowed to remain upon it for half a minute , it must be dipped into water , and then dried lightly with blotting paper . This operation in particular requires the exclusion of daylight ; and although the paper thus prepared has been ...
... allowed to remain upon it for half a minute , it must be dipped into water , and then dried lightly with blotting paper . This operation in particular requires the exclusion of daylight ; and although the paper thus prepared has been ...
Сторінка 85
... allowed to dry gradually . When perfectly dry , and just be- fore it is used , I wash it with an infusion of galls , prepared according to the Pharmacopeia , and immediately , even while it is yet wet , throw upon it the image of ...
... allowed to dry gradually . When perfectly dry , and just be- fore it is used , I wash it with an infusion of galls , prepared according to the Pharmacopeia , and immediately , even while it is yet wet , throw upon it the image of ...
Сторінка 88
... allowed in all cases , unless it is stated to be otherwise , gave , when washed over in the dark , a very faint image . The chloride of silver on paper gave , under the same treatment , a good picture ; but it wanted clear- ness and ...
... allowed in all cases , unless it is stated to be otherwise , gave , when washed over in the dark , a very faint image . The chloride of silver on paper gave , under the same treatment , a good picture ; but it wanted clear- ness and ...
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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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