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 xv
... effect on chloride of silver . 4th . The rays which pass through very dark blue glasses rapidly change the colour . The yellow glasses obstruct scarcely any Light ; the blue glasses may be so dark as to admit of the permeation of an ...
... effect on chloride of silver . 4th . The rays which pass through very dark blue glasses rapidly change the colour . The yellow glasses obstruct scarcely any Light ; the blue glasses may be so dark as to admit of the permeation of an ...
Сторінка xvii
... effect belongs , may be entirely obliterated without the chemical effect ceasing ; and that under other conditions the blue ray may appear clear and intense in the spectrum thrown on the chloride of silver , and yet produce no chemical ...
... effect belongs , may be entirely obliterated without the chemical effect ceasing ; and that under other conditions the blue ray may appear clear and intense in the spectrum thrown on the chloride of silver , and yet produce no chemical ...
Сторінка 10
... effect , though more slowly . Heat without Light has no effect on the mixture . Should the black colour not be real silver ? " " I put some silver earth ( oxide of silver ) on a piece of porcelain , and exposed it in the focus of a burn ...
... effect , though more slowly . Heat without Light has no effect on the mixture . Should the black colour not be real silver ? " " I put some silver earth ( oxide of silver ) on a piece of porcelain , and exposed it in the focus of a burn ...
Сторінка 12
... effect of this heat on the ox- ides of these metals . Having wetted a piece of taffeta riband with a saturated solution of the chloride of gold , it was held , stretched horizontally , over the clear bright flame of a wax candle , the ...
... effect of this heat on the ox- ides of these metals . Having wetted a piece of taffeta riband with a saturated solution of the chloride of gold , it was held , stretched horizontally , over the clear bright flame of a wax candle , the ...
Сторінка 15
... effect was produced upon the parts in shadow . He also appears to have observed that the two ends of the solar spectrum produced dissimilar effects on phosphorus . ‡ ( 21. ) In 1801 , Ritter , of Jena , repeated the experi- ments of ...
... effect was produced upon the parts in shadow . He also appears to have observed that the two ends of the solar spectrum produced dissimilar effects on phosphorus . ‡ ( 21. ) In 1801 , Ritter , of Jena , repeated the experi- ments of ...
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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 crown 8vo Daguerreotype dark darkened distilled water dried effect Engravings evident experiments exposed exposure 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 morocco 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 space sun's rays sunshine surface tint tion uranium glass vapour vegetable violet rays visible vols washed Woodcuts yellow ray