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 12
... become nearly dry , a spot of a very fine purple colour , approaching to crimson , suddenly made its appear- ance in the middle of it , and , spreading rapidly on all sides , became , in one or two seconds more , nearly an inch in dia ...
... become nearly dry , a spot of a very fine purple colour , approaching to crimson , suddenly made its appear- ance in the middle of it , and , spreading rapidly on all sides , became , in one or two seconds more , nearly an inch in dia ...
Сторінка 22
... becomes at length nearly black . The alterations of colour take place more speedily in proportion as the Light is ... become dark . For copying paintings on glass , the solution should be ap- plied on leather , and in this case it is ...
... becomes at length nearly black . The alterations of colour take place more speedily in proportion as the Light is ... become dark . For copying paintings on glass , the solution should be ap- plied on leather , and in this case it is ...
Сторінка 23
... become dark when ex- posed to the rays of the sun . Besides the applications of this method of copying that have just been mentioned , there are many others ; and it will be useful for making delineations of all such objects as are ...
... become dark when ex- posed to the rays of the sun . Besides the applications of this method of copying that have just been mentioned , there are many others ; and it will be useful for making delineations of all such objects as are ...
Сторінка 40
... becomes a greenish white . A solution of sulphate of A solution of sulphate of copper and red ink produces the same effect . Proceeding in this manner we are enabled to trace red , ANALYSIS OF WHITE LIGHT . 41 yellow , blue , 40 ...
... becomes a greenish white . A solution of sulphate of A solution of sulphate of copper and red ink produces the same effect . Proceeding in this manner we are enabled to trace red , ANALYSIS OF WHITE LIGHT . 41 yellow , blue , 40 ...
Сторінка 43
... becomes visible , which ray is of a pecu- liar neutral colour , and has been termed a grey or lavender Thus the researches of Herschel increase the number of chromatic bands to nine . ray . ( 55. ) The peculiarity exhibited by a ...
... becomes visible , which ray is of a pecu- liar neutral colour , and has been termed a grey or lavender Thus the researches of Herschel increase the number of chromatic bands to nine . ray . ( 55. ) The peculiarity exhibited by a ...
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absorption actinic ammonia appears Becquerel bleaching blue rays bodies brown calorific rays calotype camera obscura carbonic acid chemical action chemical change chemical rays chloride of silver chromate colour combination copper Daguerreotype dark darkened dissolved distilled water dried effect employed evident experiments exposed exposure ferrocyanide fluid formed gallic acid germination gold green rays heat hyposulphite of soda impression influence intensity invisible iodide of silver iodine iron least refrangible Light luminous rays mercury metallic minutes Niepce nitrate of silver nitric acid observed obtained oxide oxygen paper peculiar phenomena photographic picture placed plants plate portion potash potassium precipitate prepared prism prismatic spectrum produced quantity quinine radiations red rays refrangible rays remarkable rendered 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 washed yellow ray