. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. Fig. E. Diagram of the radiomicrometer. a, aperture in the side of box; /, quartz filament; h, horse-shoe magnet; I, loop; m, mirror; p, platinum disk; s, couple. the stationary magnet. The amount of rotation is proportional to the radiant energy of the light which strikes the thermal junction, and can be measured on a scale reflected into a telescope by a tiny mirror, m, included in the suspended system. By this instrument the intensity of the colored lights was registered in the same units. After reducing a
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. Fig. E. Diagram of the radiomicrometer. a, aperture in the side of box; /, quartz filament; h, horse-shoe magnet; I, loop; m, mirror; p, platinum disk; s, couple. the stationary magnet. The amount of rotation is proportional to the radiant energy of the light which strikes the thermal junction, and can be measured on a scale reflected into a telescope by a tiny mirror, m, included in the suspended system. By this instrument the intensity of the colored lights was registered in the same units. After reducing a color to the common thermal equivalent, it was examined with a spectroscope and its spectral range was recorded upon the diaphragm used. Whenever a Nernst filament was replaced and the lights were again balanced on the radiomicrometer, these spectral ranges had to be modified slightly. Through the first part of the investigations four spectral regions were employed whose ranges in wave-length were:— Blue-violet 430-490 mm Green 495-545 " Yellow 565-620 " Red 625-665 ". Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
