The Art And Practice of Silver Printing
The Art And Practice of Silver Printing
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In our eReader you can find the full English version of the book. Read The Art And Practice of Silver Printing 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 Art And Practice of Silver Printing
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A very common addition to make to a toning bath is acetate of soda, and if the gold be in defect, the same appearance will take place in the solution. If chloride of lime, however, be added instead, and a commencement of precipitation of gold be brought about, the gold will be of a blue colour, having a slight tendency to purple. In this case, the grains of gold deposited are larger than when it is in the ruby state. The tone of the print then depends in a large measure on the degree of rapidit...y with which the gold is deposited. The quicker the deposit, the larger and bluer the gold, whilst au extremely slow deposition will give the red form. It often happens that no matter how long a print is immersed in a toning bath, it never takes a blue tone. The reason will be obvious from the above remarks.
We now give some toning baths which are much used.
No. 1. Gold tri-chloride 1 grain Sodium carbonate ... ... ... 10 grains Water ... , ... 10 ounces This bath must be used immediately after mixing, since the gold is precipitated by the carbonate.
What to read after The Art And Practice of Silver Printing?
You can find similar books in the "Read Also" column, or choose other free books by H P Henry Peach Robinson to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
A very common addition to make to a toning bath is acetate of soda, and if the gold be in defect, the same appearance will take place in the solution. If chloride of lime, however, be added instead, and a commencement of precipitation of gold be brought about, the gold will be of a blue colour, having a slight tendency to purple. In this case, the grains of gold deposited are larger than when it is in the ruby state. The tone of the print then depends in a large measure on the degree of rapidit...y with which the gold is deposited. The quicker the deposit, the larger and bluer the gold, whilst au extremely slow deposition will give the red form. It often happens that no matter how long a print is immersed in a toning bath, it never takes a blue tone. The reason will be obvious from the above remarks.
We now give some toning baths which are much used.
No. 1. Gold tri-chloride 1 grain Sodium carbonate ... ... ... 10 grains Water ... , ... 10 ounces This bath must be used immediately after mixing, since the gold is precipitated by the carbonate.
What to read after The Art And Practice of Silver Printing?
You can find similar books in the "Read Also" column, or choose other free books by H P Henry Peach Robinson to read onlineMoreLess
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