 ... 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 ... - الصفحة 216بواسطة G.P. Putnam & Co - 1852عرض كامل - لمحة عن هذا الكتاب
 | Perry Fairfax Nursey - 1849 - عدد الصفحات: 650
...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...phenomena ; and gold, although usually employed for the parpóse of imparting varieties of red, was found by varying degrees of heating at a high temperature,... | |
 | 1849 - عدد الصفحات: 654
...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 thn same phenomena; and gold, although usually employed for the purpose of imparting varieties of red,... | |
 | 1849 - عدد الصفحات: 656
...regelated by the heat to which the glass was exposed. It was found that silver, although with lees intensity, exhibited the same phenomena; and gold, although usually employed for the parpóse of imparting varieties of red, was found by varying degrees of heating at a high temperature,... | |
 | 1850 - عدد الصفحات: 604
...by the heat to * British Association. which the glass was exposed. It was found that silver, though with less intensity, exhibited the same phenomena...varieties of red, was found, by varying degrees of heat at a high temperature, and recasting several times to give a great many tints, varying from blue... | |
 | 1850 - عدد الصفحات: 604
...by the heat to * British Association. which the glass was exposed. It was found that silver, though with less intensity, exhibited the same phenomena ; and gold, although usually employed for the purposa of imparting varieties of red, was found, by varying degrees of heat at a high temperature,... | |
 | john and charles watt - 1850 - عدد الصفحات: 616
...like manner regulated by the heat to which the glass was exposed. It was found that silver, though with less intensity, exhibited the same phenomena ; and gold, although usually employed for the purposa of imparting varieties of red, was found, by varying degrees of heat at a high temperature,... | |
 | 1850 - عدد الصفحات: 332
...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, exhihited the same phenomena ; and gold, although usually employed for the purpose of imparting varieties... | |
 | Thomas Antisell - 1852 - عدد الصفحات: 728
...similar character were observed with the oxides of copper; the colors being in like manner regulated by the heat to which glass was exposed. It was found...employed for the purpose of imparting varieties of fed, was found by varying degrees of heating at a high temperature and recasting several times to give... | |
 | Cyclopaedia - 1852 - عدد الصفحات: 258
...regulated by the heat to whieh the glass was exposed. It was found that silver, although with les? intensity, exhibited the same phenomena ; and gold,...purpose of imparting varieties of red, was found, by various degrees of heating at a high temperature, and reeasting several times, to give a great many... | |
 | 1856 - عدد الصفحات: 540
...purple color to the human skin." — Rose. " M. Bontemps says that gold, which is used in glass coloring for the purpose of imparting varieties of red, was...from blue to pink, red, opaque yellow, and green. * * * * Mr. B. is disposed to refer these chromatic changes to some modifications of the composing... | |
| |
