Researches on Light in Its Chemical Relations: Embracing a Consideration of All the Photographic ProcessesLongman, Brown, Green, and Longmans, 1854 - 396 стор. |
З цієї книги
Результати 6-10 із 66
Сторінка 125
... iron applied , which very readily darkens , all the parts on which the light has acted , to a deep brown , every object being brought out with great sharpness . When the best effect is produced the process must be stopped , or the ...
... iron applied , which very readily darkens , all the parts on which the light has acted , to a deep brown , every object being brought out with great sharpness . When the best effect is produced the process must be stopped , or the ...
Сторінка 132
... iron is added , the blue produced is much more intense . This chemical change is , I find , brought about entirely by the blue and violet rays of the spectrum . ( 217. ) If chloride of silver is allowed to darken by ex- posure to ...
... iron is added , the blue produced is much more intense . This chemical change is , I find , brought about entirely by the blue and violet rays of the spectrum . ( 217. ) If chloride of silver is allowed to darken by ex- posure to ...
Сторінка 133
... Iron has a decided property of accelerating the process of change ; but it unfortunately continues the darkening influence when once set up , even when preserved in the dark . When we come to the con- sideration of the effects produced ...
... Iron has a decided property of accelerating the process of change ; but it unfortunately continues the darkening influence when once set up , even when preserved in the dark . When we come to the con- sideration of the effects produced ...
Сторінка 135
... iron is employed as the developing agent instead of gallic acid , in many cases with the most evident advantage . The use of this salt is not confined to the iodide of silver , but , as I proved at the meeting of the British Association ...
... iron is employed as the developing agent instead of gallic acid , in many cases with the most evident advantage . The use of this salt is not confined to the iodide of silver , but , as I proved at the meeting of the British Association ...
Сторінка 136
... iron was mixed in certain proportions with solution of nitrate of silver , the precipitate was very quickly blackened when exposed to the light , and I thought that , if properly used , it might be employed with advan- tage as a ...
... iron was mixed in certain proportions with solution of nitrate of silver , the precipitate was very quickly blackened when exposed to the light , and I thought that , if properly used , it might be employed with advan- tage as a ...
Інші видання - Показати все
Загальні терміни та фрази
actinic ammonia appears Becquerel bleaching blue rays brown calotype camera obscura carbonic acid chemical action chemical change chemical rays chloride of silver chromate collodion COLLODION PROCESS colour combination copper Daguerreotype dark darkened distilled water dried Edition effect Engravings experiments exposed exposure fluid formed gallic acid germination gold green rays heat hyposulphite of soda impression 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 portion Post 8vo potash potassium precipitate prepared prism prismatic spectrum produced Prussian blue 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 violet rays visible vols washed yellow rays
Популярні уривки
Сторінка 393 - OF PLANTS; Including all the Plants which are now found in, or have been introduced into, Great Britain ; giving their Natural History, accompanied by such descriptions, engraved figures, and elementary details, as may enable a beginner, who is a mere English reader, to discover the name of every Plant which he may find in flower, and acquire all the information respecting it which is useful and interesting.
Сторінка 1 - Professor Owen's Lectures on the Comparative Anatomy and Physiology of the Vertebrate Animals, delivered at the Royal College of Surgeons in 1844 and 1846.
Сторінка 8 - Dr. Ure's Dictionary of Arts, Manufactures, and Mines : Containing a clear Exposition of their Principles and Practice.
Сторінка 385 - Burton.— The History of Scotland, from the Revolution to the Extinction of the last Jacobite Insurrection (1689—1748).
Сторінка 389 - Last Days of Our Lord's Ministry: A Course of Lectures on the principal Events of Passion Week.
Сторінка 389 - Haydn's Book of Dignities: Containing Rolls of the Official Personages of the British Empire, Civil, Ecclesiastical, Judicial, Military...
Сторінка 383 - Bayldon's Art of Valuing Rents and Tillages, and Tenant's Right of Entering and Quitting Farms, explained by several Specimens of Valuations; with Remarks on the Cultivation pursued on Soils in different Situations. Adapted to the Use of Landlords, Land-Agents, Appraisers, Farmers, and Tenants. New Edition ; corrected and revised by JOHN DONALDSON.
Сторінка 393 - London's Encyclopaedia of Agriculture: comprising the Laying-out, Improvement, and Management of Landed Property, and the Cultivation and Economy of the Productions of Agriculture. With 1,100 Woodcuts. 8vo. 21s. London's Encyclopaedia of Gardening: comprising the Theory and Practice of Horticulture, Floriculture, Arboriculture, and Landscape Gardening.
Сторінка 384 - Encyclopaedia of Rural Sports; or, a complete Account, Historical, Practical, and Descriptive, of Hunting, Shooting, Fishing, Racing, and other Field Sports and Athletic Amusements of the present day.
Сторінка 388 - Esq. Illustrated by Wood Engravings, from Designs by Members of the Etching Club. Square crown 8vo.