Researches on Light in Its Chemical Relations: Embracing a Consideration of All the Photographic Processes |
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Page 8
... less perceived by us . As for the manner wherein the planets transmit their powers , and thereby affect the remote bodies , ' tis not difficult to apprehend it ; for we affirm no virtue or power to flow from the planets that comes not ...
... less perceived by us . As for the manner wherein the planets transmit their powers , and thereby affect the remote bodies , ' tis not difficult to apprehend it ; for we affirm no virtue or power to flow from the planets that comes not ...
Page 13
... less than half an hour small specks of revived gold in all its metallic splendour , appeared on the surface of the charcoal . Etherial solutions of gold were found to be de- composed by the solar rays , and even by prolonged expo- sure ...
... less than half an hour small specks of revived gold in all its metallic splendour , appeared on the surface of the charcoal . Etherial solutions of gold were found to be de- composed by the solar rays , and even by prolonged expo- sure ...
Page 16
... less dark- ened ; still less in the blue ; below which ray the power of darkening diminished quickly . He also stated that the red ray had the power of restoring darkened chloride of silver to its original colour ; and hence concluded ...
... less dark- ened ; still less in the blue ; below which ray the power of darkening diminished quickly . He also stated that the red ray had the power of restoring darkened chloride of silver to its original colour ; and hence concluded ...
Page 17
... less sur- prising that the difference should be so small , as the di- mensions of the coloured rings do not by any means vary at the violet end of the spectrum so rapidly as at the red end . The experiment in its present state is ...
... less sur- prising that the difference should be so small , as the di- mensions of the coloured rings do not by any means vary at the violet end of the spectrum so rapidly as at the red end . The experiment in its present state is ...
Page 21
... less bright and less hot , it was blackened in less than six minutes . " This is the earliest intimation we have of any indication that the luminous and chemical powers may be due to dissimilar agencies . On this , the Commissioners ...
... less bright and less hot , it was blackened in less than six minutes . " This is the earliest intimation we have of any indication that the luminous and chemical powers may be due to dissimilar agencies . On this , the Commissioners ...
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Common terms and phrases
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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