The Technical World Magazine, Volume 3Technical World Company, 1905 |
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Page 306
... light and the incandescent electric lamp . The most familiar form of light is the incandescent electric lamp , an invention of but a quarter of a century ago ; yet in less than another quarter of a century vacuum - tube lighting ...
... light and the incandescent electric lamp . The most familiar form of light is the incandescent electric lamp , an invention of but a quarter of a century ago ; yet in less than another quarter of a century vacuum - tube lighting ...
Page 308
... light . The proof of this is the fact that colors can be perfectly matched under its soft rays ; and one of the leading art houses of New York has its artists mix their colors under this light . The nearer in quality any artificial light ...
... light . The proof of this is the fact that colors can be perfectly matched under its soft rays ; and one of the leading art houses of New York has its artists mix their colors under this light . The nearer in quality any artificial light ...
Page 311
... light is for photography . For this purpose the tube is bent back and forth over the surface of a window- like metal frame , which is mounted on rollers and placed near the object to be photographed . Fig . 7 shows such a win- dow ...
... light is for photography . For this purpose the tube is bent back and forth over the surface of a window- like metal frame , which is mounted on rollers and placed near the object to be photographed . Fig . 7 shows such a win- dow ...
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