Researches on Light in Its Chemical Relations: Embracing a Consideration of All the Photographic Processes |
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Page xiii
... chloride of silver to phlogiston . Conjecture is a process common to every mind ; we all frame hypotheses as we endeavour to advance from effects to causes . The strictest inductive philosophy allows of this ; but the hypothesis must ...
... chloride of silver to phlogiston . Conjecture is a process common to every mind ; we all frame hypotheses as we endeavour to advance from effects to causes . The strictest inductive philosophy allows of this ; but the hypothesis must ...
Page xiv
... chloride of silver darkens upon exposure to sunshine , or to daylight , is what we have to examine . We may take this simple phenomenon of change as repre- senting all that are embraced in this Volume , the differences being only in ...
... chloride of silver darkens upon exposure to sunshine , or to daylight , is what we have to examine . We may take this simple phenomenon of change as repre- senting all that are embraced in this Volume , the differences being only in ...
Page xv
... chloride of silver changes colour in the sunshine , we cannot fail to observe the several peculiarities following : — 1st . Those rays which give the most Light - the yellow and the orange rays - will not produce change of colour in the ...
... chloride of silver changes colour in the sunshine , we cannot fail to observe the several peculiarities following : — 1st . Those rays which give the most Light - the yellow and the orange rays - will not produce change of colour in the ...
Page xvii
... chloride of silver a chemical change from the green ray to some distance beyond the visible violet . Each spectrum is now so arranged , that the inactive . yellow and orange rays of one are thrown upon the most active blue and violet ...
... chloride of silver a chemical change from the green ray to some distance beyond the visible violet . Each spectrum is now so arranged , that the inactive . yellow and orange rays of one are thrown upon the most active blue and violet ...
Page 5
... ( chloride of silver fused ) was blackened by the sun's rays . This and other peculiar influences which the alchymists observed , led them to fancy that the " sulphu- rous principle " of Light was one of the most important agents in ...
... ( chloride of silver fused ) was blackened by the sun's rays . This and other peculiar influences which the alchymists observed , led them to fancy that the " sulphu- rous principle " of Light was one of the most important agents in ...
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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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