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 xiv
... 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 degree . Since this white salt of ...
... 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 degree . Since this white salt of ...
Сторінка 10
... exposed it in the focus of a burn- ing glass ; immediately the surface of this earth was re- duced to silver . " The following experiments are instructive . " I precipitated a solution of silver by sal - ammoniac ; then I edulcorated ...
... exposed it in the focus of a burn- ing glass ; immediately the surface of this earth was re- duced to silver . " The following experiments are instructive . " I precipitated a solution of silver by sal - ammoniac ; then I edulcorated ...
Сторінка 13
... exposed in a damp state , than if the solution was permitted to dry on them previous to exposure . ( 17. ) Arguing from the facility with which most of the metallic oxides are reduced , by means of charcoal when exposed to a high ...
... exposed in a damp state , than if the solution was permitted to dry on them previous to exposure . ( 17. ) Arguing from the facility with which most of the metallic oxides are reduced , by means of charcoal when exposed to a high ...
Сторінка 17
... exposure , always became acid . The same observer found that ammonia and phosphorus exposed to the sun's rays were rapidly converted into phosphuretted hydrogen and a black powder - phosphuret of ammonia . C Vogel also noticed that the ...
... exposure , always became acid . The same observer found that ammonia and phosphorus exposed to the sun's rays were rapidly converted into phosphuretted hydrogen and a black powder - phosphuret of ammonia . C Vogel also noticed that the ...
Сторінка 20
... exposed for a certain time to the action of each ray , he observed sensible effects , though with an intensity ... exposed more than two hours to this brilliant point of light , without undergoing any sensible alteration . On the ...
... exposed for a certain time to the action of each ray , he observed sensible effects , though with an intensity ... exposed more than two hours to this brilliant point of light , without undergoing any sensible alteration . On the ...
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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