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
... luminous phenomena , it is generally received . However , it must not be forgotten , that we arrive at this hypothesis by reasoning from analogy . If we cause a stretched string to vibrate , its pulsations are communicated to the ...
... luminous phenomena , it is generally received . However , it must not be forgotten , that we arrive at this hypothesis by reasoning from analogy . If we cause a stretched string to vibrate , its pulsations are communicated to the ...
Сторінка xvi
... luminous rings , no chemical change occurred . Again , M. E. Becquerel and Professor Stokes have proved that the chemically impressed spectrum - over those spaces which are more especially chemically active - ex- hibits inactive lines ...
... luminous rings , no chemical change occurred . Again , M. E. Becquerel and Professor Stokes have proved that the chemically impressed spectrum - over those spaces which are more especially chemically active - ex- hibits inactive lines ...
Сторінка xvii
... luminous coloured ray is not obstructed its chemical power should still exist undiminished . Reference to the chapter devoted to the action of absorbent media will show that the blue rays , regarded as the rays to which the maximum ...
... luminous coloured ray is not obstructed its chemical power should still exist undiminished . Reference to the chapter devoted to the action of absorbent media will show that the blue rays , regarded as the rays to which the maximum ...
Сторінка xviii
... luminous and calorific phenomena of the solar rays . As it respects Light , I am quite ready to bow to the numerous high authorities who support the undulatory hypothesis . Not so , however , with regard to the chemical radiations ...
... luminous and calorific phenomena of the solar rays . As it respects Light , I am quite ready to bow to the numerous high authorities who support the undulatory hypothesis . Not so , however , with regard to the chemical radiations ...
Сторінка 4
... luminous rays with extraordi- nary brilliancy , it became a matter of conjecture if they shone with their own light , or if it was , that they again poured out light which they had the power of absorbing . Several Italians and others ...
... luminous rays with extraordi- nary brilliancy , it became a matter of conjecture if they shone with their own light , or if it was , that they again poured out light which they had the power of absorbing . Several Italians and others ...
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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