Technical World Magazine, Volume 12Technical World Company, 1909 |
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Page 95
... light will now be in a half - shadow , while the remain- ing portions will be more intensely illuminated . How- ever , this second negative will for the same two rea- sons fail to show graduation of the prism . Now it will be noticed ...
... light will now be in a half - shadow , while the remain- ing portions will be more intensely illuminated . How- ever , this second negative will for the same two rea- sons fail to show graduation of the prism . Now it will be noticed ...
Page 338
... light in any respect adapted to the needs of the brain worker . The most objectionable features of both gas and electricity are the heat they radiate and the brilliancy of light . As comfortable as it may be to have the whole room ...
... light in any respect adapted to the needs of the brain worker . The most objectionable features of both gas and electricity are the heat they radiate and the brilliancy of light . As comfortable as it may be to have the whole room ...
Page 429
... light " and artificial illuminants is the absence of any heat rays . Nature thus long ago found the solution of a problem that is puzzling our en- gineers , that is , to produce light without heat . While the living lamp thus is ...
... light " and artificial illuminants is the absence of any heat rays . Nature thus long ago found the solution of a problem that is puzzling our en- gineers , that is , to produce light without heat . While the living lamp thus is ...
Contents
MAGAZINE | 586 |
The Rule of the Roustabout | 591 |
In the Stranger Peoples | 605 |
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