Photometrical Measurements And Manual for the General Practice of Photometry Wi
Photometrical Measurements And Manual for the General Practice of Photometry Wi
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To quickly assess the difficulty of the text, read a short excerpt:
axis. In the illustrations a curve for the distribution of the light in a vertical plane is shown in Figure 50, and both the 198 PHOTOMETRIC AL MEASUREMENTS shape and position of the filament are indicated ; v while the dis- tribution in the horizontal plane, of filaments whose shape is sketched in each case, is given in Figures 51 and 52.
FIG. 52.
The intensity at the tip of the lamp is low, because the area of the filament projecting in this direction is small ; the base entirely screens all ...light in its direction. * THE PHOTOMETER ROOM AND ITS APPARATUS 205. The size of the room in case no flames are used pho- tometrically is of little consequence; it may be just large enough to accommodate the apparatus and leave space for operating it, due allowance being made for proper ventilation. When, as must be the case in most laboratories, flames are photometered, a large room is a necessity in order to insure * An admirable paper by Liebenthal on " The Light Distribution and the Photometry of the Incandescent Lamp, " may be found in Zeitschrift fur Instrumentenkunde, 19, 1899, pages 193 and 225.
What to read after Photometrical Measurements And Manual for the General Practice of Photometry Wi?
You can find similar books in the "Read Also" column, or choose other free books by Wilbur M Wilbur Morris Stine to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
axis. In the illustrations a curve for the distribution of the light in a vertical plane is shown in Figure 50, and both the 198 PHOTOMETRIC AL MEASUREMENTS shape and position of the filament are indicated ; v while the dis- tribution in the horizontal plane, of filaments whose shape is sketched in each case, is given in Figures 51 and 52.
FIG. 52.
The intensity at the tip of the lamp is low, because the area of the filament projecting in this direction is small ; the base entirely screens all ...light in its direction. * THE PHOTOMETER ROOM AND ITS APPARATUS 205. The size of the room in case no flames are used pho- tometrically is of little consequence; it may be just large enough to accommodate the apparatus and leave space for operating it, due allowance being made for proper ventilation. When, as must be the case in most laboratories, flames are photometered, a large room is a necessity in order to insure * An admirable paper by Liebenthal on " The Light Distribution and the Photometry of the Incandescent Lamp, " may be found in Zeitschrift fur Instrumentenkunde, 19, 1899, pages 193 and 225.
What to read after Photometrical Measurements And Manual for the General Practice of Photometry Wi?
You can find similar books in the "Read Also" column, or choose other free books by Wilbur M Wilbur Morris Stine to read onlineMoreLess
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