 Transmissibility 0.90 0.01 0.04 0.10 0.20 0.41 0.66 0.80 0.9 0.92 By interposing this absorbing screen the proportion of the observed radiation which lay in the infrared spectrum could be roughly determined. Various trials made on Flint Island showed...  Lick Observatory Bulletins - Page 16by Lick Observatory - 1910Full view - About this book
 | 1908 - 676 pages
...i.oo i. 20 i. 60 V2.OO Transmissibility. . o.oo O.OI 0.04 O IO O.20 0.41 0.66 o 80 0.90 o 92 VOL. 52 By interposing this absorbing screen the proportion...air and the altitude of the sun ; whereas sky-rays were only about 2O to 25 per cent transmissible. Moon-brightness (and by this is meant reflected sun-rays,... | |
 | Astronomical Society of the Pacific - 1907 - 686 pages
...part of the radiation, while transmitting nearly all of the infra-red rays transmissible by glass. By interposing this absorbing screen the proportion...the infra-red spectrum could be roughly determined. The equatorial was set up at Flint Island on the beach at about I2m distance from the galvanometer... | |
 | Astronomical Society of the Pacific - 1908 - 370 pages
...part of the radiation, while transmitting nearly all of the infra-red rays transmissible by glass. By interposing this absorbing screen the proportion...the infra-red spectrum could be roughly determined. The equatorial was set up at Flint Island on the beach at about 12™ distance from the galvanometer... | |
 | Smithsonian Institution. Board of Regents - 1909 - 952 pages
...part of the radiation, while transmitting nearly all of the infra-red rays transmissible by glass. By interposing this absorbing screen the proportion...radiation which lay in the infra-red spectrum could be roughiy determined. The equatorial was set up at Flint Island on the beach at about 12 meters distance... | |
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