 ... doubt whether any change in the oxidation of the metal will explain the photogenic effect A series of chromatic changes of a similar character were observed with the oxides of copper, the colours being in like manner regulated by the heat to which...  Putnam's Home Cyclopedia ... - Page 216by G.P. Putnam & Co - 1852Full view - About this book
 | Andrew Ure - Industrial arts - 1860 - 786 pages
...observed with the oxides of copper, the colours being in like manner regulated by the heat to which the glass was exposed. It was found that silver, although...several times, to give a great many tints, varying from bine to pink, red, opaque yellow, and green. Charcoal in excess in a mixture of silica-alkaline glass... | |
 | Andrew Ure - 1867 - 918 pages
...the colours being in like manner regulated by the heat to »bit» the glass was exposed. It was fonnd that silver, although with less intensity, exhibited...yellow, and green. Charcoal in excess in a mixture of silica-alkaline glass gives a yellow colour, which is not so bright as the yellow from silver : and... | |
 | Alexander Nesbitt - 1873 - 168 pages
...silver, gold, and charcoal were all found to produce corresponding results ; gold, for instance, giving a great many tints varying from blue to pink, red, opaque yellow, and green. M. Bontemps was of opinion that, in the case of manganese, light is the agent which produces change,... | |
 | South Kensington Museum - Glassware - 1878 - 478 pages
...filver, gold, and charcoal were all found to produce correfponding refults ; gold, for inftance, giving a great many tints varying from blue to pink, red, opaque yellow, and green. M. Bontemps was of opinion that, in the cafe of manganefe, light is the agent which produces change,... | |
 | Madeline Anne Wallace-Dunlop - Glass manufacture - 1882 - 316 pages
...silver, gold, and charcoal were all found to produce corresponding results ; gold for instance giving a great many tints varying from blue to pink, red, opaque yellow and green. M. Bontemps was of opinion that in the case of manganese light is the agent which produces change,... | |
 | British Association for the Advancement of Science. Meeting - Science - 1849 - 706 pages
...observed with the uxides of copper; the colours being in like manner regulated by the heat to which the glass was exposed. It was found that silver, although...heating at a high temperature and recasting several tiroes, to give a great many tints, varying from blue to pink, red, opake yellow and green. Charcoal... | |
 | William Francis, Henry Croft - Chemistry - 1849 - 514 pages
...observed with the oxides of copper; the colours being in like manner regulated by the heat to which the glass was exposed. It was found that silver, although...great many tints, varying from blue to pink, red, opake yellow and green. Charcoal in excess in a mixture of silica-alkaline glass gives a yellow colour,... | |
 | Chemistry - 1849 - 654 pages
...observed with the oxides of copper ; the colours being in like manner regulated by the heat to which the glass was exposed. It was found that silver, although with less intensity, exhibited the same phaenomena ; and gold, although usually employed for the purpose of imparting varieties of red, was... | |
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