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Libros Libros 1 - 7 de 7 sobre The precise number differs according to the sensibility of different eyes, but for...
" The precise number differs according to the sensibility of different eyes, but for the same organ it is constant. Upon a paper screen I threw the shadow of a piece of copper, which intercepted the rays of the incandescent platinum : then taking an Argand... "
The American Journal of Science and Arts - Página 395
1847
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The American Journal of Science, Volumen54

1847
...screen of white paper, a candle so arranged as to throw the shadow of a ruler, or other opake bodyr. on the screen. If a second candle be placed also in...temperature of the platinum again determined. In this manner I obtained several series of results, one of which is given in the following table. They exhibited...
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Journal of the Franklin Institute

1847
...considerable exactness. When the lights are equal, Bouguer found that the relative distances were as 1 :S ; he inferred therefore, correctly, that in the case...the temperature of the platinum again determined. Table of the Intensity of Light emitted by Platinum at different Temperatures. In this manner I obtained...
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The American Journal of Science and Arts

1847
...imperceptible when it was in presence of another sixty-four times as intense. The precise number ditfers according to the sensibility of different eyes, but...temperature of the platinum again determined. In this manner I obtained several series of results, one of which is given in the following table. They exhibited...
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Harper's Magazine, Volumen54

1877
...trial would continue for an hour of almost the same intensity, I approached it to the paper sheet, until the shadow cast by the copper disappeared. The...temperature of the platinum determined. The temperature ofthe platinum was now raised, the shadow became more intense, and it was necessary to bring the Argand...
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Scientific Memoirs: Being Experimental Contributions to a Knowledge of ...

John William Draper - 1878 - 473 páginas
...trial would continue for an hour of almost the same intensity, I approached it to the paper sheet, until the shadow cast by the copper disappeared. The...the temperature of the platinum again determined. In Fig. 5, ab is the strip of ignited platinum. It casts a shadow, A, of the metal rod e on the white...
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Philosophical Magazine: A Journal of Theoretical, Experimental and Applied ...

1847
...considerable exactness. When the lights are equal, Bouguer found that the relative distances were as 1 : 8 ; he inferred therefore, correctly, that in the case...the temperature of the platinum again determined. . i In this manner 1 obtained several series of results, one of which is given in the following table....
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Journal of the Franklin Institute, Volumen44

Franklin Institute (Philadelphia, Pa.) - 1847
...incandescent platinum : then taking an Argand lamp, surrounded by a cylindrical metal shade through ar-i aperture in which the light passed, and the flame...the temperature of the platinum again determined. Table of the Intensity of Light emitted by Platinum at different Temperatures. 111 this manner I obtained...
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