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 xix
... Sir John Herschel , in his memoir ' On the Chemical Action of the Rays of the Solar Spectrum , ' used the epithet Actinograph to indicate an instrument of a very ingenious kind , devised by him for registering the different degrees of ...
... Sir John Herschel , in his memoir ' On the Chemical Action of the Rays of the Solar Spectrum , ' used the epithet Actinograph to indicate an instrument of a very ingenious kind , devised by him for registering the different degrees of ...
Сторінка 43
... Sir John Herschel has shown us , that by looking at the spectrum with a cobalt - blue glass , we perceive a ray , called by him the " extreme red , " of a crimson colour , below the ordinary red ray of the spec- trum . Again , by ...
... Sir John Herschel has shown us , that by looking at the spectrum with a cobalt - blue glass , we perceive a ray , called by him the " extreme red , " of a crimson colour , below the ordinary red ray of the spec- trum . Again , by ...
Сторінка 44
... Sir John Herschel Epipolic ; and a beam of light which , after having passed through a solution of quinine , was incapable of again producing the effect , he termed Epipolised light . ( 57. ) Sir David Brewster , in a paper read before ...
... Sir John Herschel Epipolic ; and a beam of light which , after having passed through a solution of quinine , was incapable of again producing the effect , he termed Epipolised light . ( 57. ) Sir David Brewster , in a paper read before ...
Сторінка 53
... Sir John Herschel's experiments on the thermic spectrum must here have a place . To pro- cure visible effects of the calorific power of the spectrum , the following method was adopted : " The thinnest post paper , such as is sold for ...
... Sir John Herschel's experiments on the thermic spectrum must here have a place . To pro- cure visible effects of the calorific power of the spectrum , the following method was adopted : " The thinnest post paper , such as is sold for ...
Сторінка 54
... Sir John Herschel details some of the results obtained upon different coloured papers , each of which has its pe- culiar scale of action . The results , however , obtained upon smoked paper , which are the most satisfactory , are thus ...
... Sir John Herschel details some of the results obtained upon different coloured papers , each of which has its pe- culiar scale of action . The results , however , obtained upon smoked paper , which are the most satisfactory , are thus ...
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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 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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