Researches on Light in Its Chemical Relations: Embracing a Consideration of All the Photographic ProcessesLongman, 1854 - 396 стор. |
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Сторінка 57
... prepared by precipitating it in the dark , from a solution of nitrate of silver , by pure potash is , when applied to paper in a pasty state and dried , of a very dark green colour ; if it be exposed for a few hours to good sunshine ...
... prepared by precipitating it in the dark , from a solution of nitrate of silver , by pure potash is , when applied to paper in a pasty state and dried , of a very dark green colour ; if it be exposed for a few hours to good sunshine ...
Сторінка 61
... prepared , is not of itself sufficiently sen- sible to Light to render it of much use . It may , however , in some few cases , be advantageously employed . If well sized paper is washed over with a solution of 100 grains of the salt in ...
... prepared , is not of itself sufficiently sen- sible to Light to render it of much use . It may , however , in some few cases , be advantageously employed . If well sized paper is washed over with a solution of 100 grains of the salt in ...
Сторінка 63
... prepared with the hydro - chlorate of ammonia or the chloride of barium , and then with two successive washes of the nitrate of silver , have given me , when the sunshine has been favourable , a range of colours very nearly ...
... prepared with the hydro - chlorate of ammonia or the chloride of barium , and then with two successive washes of the nitrate of silver , have given me , when the sunshine has been favourable , a range of colours very nearly ...
Сторінка 65
... prepared , wash it with a saturated solution of salt , and then dry it . We shall find ( especially if the paper has been kept some weeks before the trial is made ) that its sensibility is greatly di- minished , and in some cases seems ...
... prepared , wash it with a saturated solution of salt , and then dry it . We shall find ( especially if the paper has been kept some weeks before the trial is made ) that its sensibility is greatly di- minished , and in some cases seems ...
Сторінка 66
... prepared with the same ingredients , differing but very slightly in their proportions , admits of an easy explanation by an experi- ment . Precipitate upon a clean piece of glass a film of chloride of silver , which is best done in the ...
... prepared with the same ingredients , differing but very slightly in their proportions , admits of an easy explanation by an experi- ment . Precipitate upon a clean piece of glass a film of chloride of silver , which is best done in the ...
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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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