Researches on Light in Its Chemical Relations: Embracing a Consideration of All the Photographic Processes |
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Page vi
... Plants , with the practical applications which have been made of my discoveries , I can refer to with satisfaction . * I have used the labours of other men no further than they were neces- sary to illustrate the subject under ...
... Plants , with the practical applications which have been made of my discoveries , I can refer to with satisfaction . * I have used the labours of other men no further than they were neces- sary to illustrate the subject under ...
Page 2
... plant , the unfolding of the leaf , the for- mation of the flower , of the fruit and of the seed , were soon found to be under the influence of the orb of day . In spring and summer external nature was seen to grow into strength and ...
... plant , the unfolding of the leaf , the for- mation of the flower , of the fruit and of the seed , were soon found to be under the influence of the orb of day . In spring and summer external nature was seen to grow into strength and ...
Page 14
... plants ; and in 1779 Dr. Priestley gave his experiments on the same subjects to the world . There are few examples ... plant , that under the influence of Light it was decomposed , and that its oxygen was again li- berated . Upon the ...
... plants ; and in 1779 Dr. Priestley gave his experiments on the same subjects to the world . There are few examples ... plant , that under the influence of Light it was decomposed , and that its oxygen was again li- berated . Upon the ...
Page 15
... plants ; and about the same time Victor Michellotti , of Turin , published a statement , at that time doubted , but the truth of which has since been confirmed , to the effect " that Light has a decided action on those germs which are ...
... plants ; and about the same time Victor Michellotti , of Turin , published a statement , at that time doubted , but the truth of which has since been confirmed , to the effect " that Light has a decided action on those germs which are ...
Page 92
... plants or engravings are copied with very great sharpness of out- line , by the exposure of a single moment to sunshine . A I stated in my first announcement of this process , that if the paper when washed with the solution of the ...
... plants or engravings are copied with very great sharpness of out- line , by the exposure of a single moment to sunshine . A I stated in my first announcement of this process , that if the paper when washed with the solution of the ...
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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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