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- W2113178445 abstract "With a photoelectric photometer with spectral response approximately that of the light-adapted eye, the brightness and polarization of the cloudless daylight-sky were measured. The data are presented in a table of average values for places in the sky from 5° above the horizon to the zenith for altitudes of the sun from 5° above the horizon to 60°. The Bocaiuva atmosphere was fairly clear; its vertical-light transmission averaged about 75 per cent.With visual photometers many measurements were made of the brightness of the sky during twilight and at night, and a few data were obtained for the Milky Way, the Magellanic Clouds, and the zodiacal light. The average brightness of the night sky decreased from about 250 millimicro-lamberts (mμL) at 10° above the horizon to 150 mμL at the zenith." @default.
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- W2113178445 date "1949-09-01" @default.
- W2113178445 modified "2023-10-17" @default.
- W2113178445 title "Sky-brightness measurements near Bocaiuva, Brazil" @default.
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- W2113178445 doi "https://doi.org/10.1029/jz054i003p00215" @default.
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