Researches on Light in Its Chemical Relations: Embracing a Consideration of All the Photographic ProcessesLongman, 1854 - 396 стор. |
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Сторінка 23
... means of it ; and in this case it is only necessary to cause the direct solar Light to pass through them , and to receive the shadows upon prepared leather . ** ** The images formed by means of a camera obscura have been found to be too ...
... means of it ; and in this case it is only necessary to cause the direct solar Light to pass through them , and to receive the shadows upon prepared leather . ** ** The images formed by means of a camera obscura have been found to be too ...
Сторінка 42
... means of a prism , and a lens placed at a suitable distance from a narrow slit admitting the solar rays . The screen which receives the spectrum is itself perforated by a slit , which can be adjusted at will to any colour ; in this way ...
... means of a prism , and a lens placed at a suitable distance from a narrow slit admitting the solar rays . The screen which receives the spectrum is itself perforated by a slit , which can be adjusted at will to any colour ; in this way ...
Сторінка 47
... means to decompose a ray of definite refran- gibility and of pure colour into rays of another colour , or develope physical conditions of a new order , by new systems of refraction , reflection , absorption , or trans- mission . ( 61 ...
... means to decompose a ray of definite refran- gibility and of pure colour into rays of another colour , or develope physical conditions of a new order , by new systems of refraction , reflection , absorption , or trans- mission . ( 61 ...
Сторінка 63
... mean red ray leaves a red impression on the paper , which passes into green over the space occupied by the yellow rays . Above this a leaden blue is discovered , and about the mean blue ray , where the action is greatest , it rapidly ...
... mean red ray leaves a red impression on the paper , which passes into green over the space occupied by the yellow rays . Above this a leaden blue is discovered , and about the mean blue ray , where the action is greatest , it rapidly ...
Сторінка 71
... means of a small glass siphon , so that the powder on the glass plates might not be disturbed . With- out being removed from the vessel in which the precipi- tation was effected , the oxide was dried at a very moderate heat , and there ...
... means of a small glass siphon , so that the powder on the glass plates might not be disturbed . With- out being removed from the vessel in which the precipi- tation was effected , the oxide was dried at a very moderate heat , and there ...
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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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