The Boys Playbook of Science Including the Various Manipulations And Arrangem
The Boys Playbook of Science Including the Various Manipulations And Arrangem
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In our eReader you can find the full English version of the book. Read The Boys Playbook of Science Including the Various Manipulations And Arrangem Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Boys Playbook of Science Including the Various Manipulations And Arrangem
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This copying paper is used in the same manner as the last, and fresh eggs only must be used in its preparation, because stale ones soon cause the copy to change and blacken all over from the liberation of sulphur, which unites with the silver. The colour of the copy is sometimes improved by a solution of hot potash, and by dipping the well-washed picture, after the use of the hyposulphite of soda, in a very dilute solution of hydrosulphuret of ammonia.
Third Experiment.
In the Daguerreotype pro...cess, a silver plate, after being thoroughly cleaned and polished, is exposed to the vapour of iodine, and is thus rendered so sensitive that it may be at once exposed in the camera. In the Talbotype process, the same principle is apparent, and paper is prepared by first covering its surface with iodide of silver, which is afterwards rendered sensitive to the action of light by means of au excess of nitrate of silver, as follows : One side of a sheet of selected Cansan's paper is first covered (by means of a spreader) with a solution of nitrate of silver (thirty grains to the ounce of water), hung up in a dark room and dried; it is then immersed in a solution of iodide of potassium of five hundred grains to a pint of distilled water, for five or ten minutes, and immediately changes, to a yellow colour in consequence of the pre- cipitation of the yellow iodide of silver ; it is then well washed with plenty of water, and being dried, may be kept for any length of time, and is called " iodized paper.
What to read after The Boys Playbook of Science Including the Various Manipulations And Arrangem?
You can find similar books in the "Read Also" column, or choose other free books by John Henry Pepper to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
This copying paper is used in the same manner as the last, and fresh eggs only must be used in its preparation, because stale ones soon cause the copy to change and blacken all over from the liberation of sulphur, which unites with the silver. The colour of the copy is sometimes improved by a solution of hot potash, and by dipping the well-washed picture, after the use of the hyposulphite of soda, in a very dilute solution of hydrosulphuret of ammonia.
Third Experiment.
In the Daguerreotype pro...cess, a silver plate, after being thoroughly cleaned and polished, is exposed to the vapour of iodine, and is thus rendered so sensitive that it may be at once exposed in the camera. In the Talbotype process, the same principle is apparent, and paper is prepared by first covering its surface with iodide of silver, which is afterwards rendered sensitive to the action of light by means of au excess of nitrate of silver, as follows : One side of a sheet of selected Cansan's paper is first covered (by means of a spreader) with a solution of nitrate of silver (thirty grains to the ounce of water), hung up in a dark room and dried; it is then immersed in a solution of iodide of potassium of five hundred grains to a pint of distilled water, for five or ten minutes, and immediately changes, to a yellow colour in consequence of the pre- cipitation of the yellow iodide of silver ; it is then well washed with plenty of water, and being dried, may be kept for any length of time, and is called " iodized paper.
What to read after The Boys Playbook of Science Including the Various Manipulations And Arrangem?
You can find similar books in the "Read Also" column, or choose other free books by John Henry Pepper to read onlineMoreLess
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