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 17
... plate of air , capable of pro- ducing the well - known rings of colours . For this purpose I formed an image of the rings , by means of the solar mi- croscope , with the apparatus which I have described in the Journals of the Royal ...
... plate of air , capable of pro- ducing the well - known rings of colours . For this purpose I formed an image of the rings , by means of the solar mi- croscope , with the apparatus which I have described in the Journals of the Royal ...
Сторінка 26
... plate . These early productions prove , that the No. 3 . Kew , le 30me Novembre , 1827 . Monsieur , Je m'empresse de vous faire passer plus tôt que plus tard mes essais de dessin et de gravure d'après mes procedés héliographiques ...
... plate . These early productions prove , that the No. 3 . Kew , le 30me Novembre , 1827 . Monsieur , Je m'empresse de vous faire passer plus tôt que plus tard mes essais de dessin et de gravure d'après mes procedés héliographiques ...
Сторінка 29
... plate 6 by 5 inches ; it is stated at the back to have been taken from a print about 23 feet long . The picture represents the ruins of an abbey : in a pro per light it is very distinct . the process employed by him , and they entered into.
... plate 6 by 5 inches ; it is stated at the back to have been taken from a print about 23 feet long . The picture represents the ruins of an abbey : in a pro per light it is very distinct . the process employed by him , and they entered into.
Сторінка 30
... plate 8 by 51 inches , from a print , the subject " Christ bearing the Cross : " every line is beautifully distinct . 4. A copy from a print of a head 6 by 5 inches , upright , on a plate 7 by 5 inches , etched by an after process ...
... plate 8 by 51 inches , from a print , the subject " Christ bearing the Cross : " every line is beautifully distinct . 4. A copy from a print of a head 6 by 5 inches , upright , on a plate 7 by 5 inches , etched by an after process ...
Сторінка 31
... plate is then placed upon heated iron , which is wrapped round with several folds of paper , from which , by this method , all moisture has been previously expelled . When the varnish has ceased to simmer , the plate is withdrawn from ...
... plate is then placed upon heated iron , which is wrapped round with several folds of paper , from which , by this method , all moisture has been previously expelled . When the varnish has ceased to simmer , the plate is withdrawn from ...
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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