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The angular-scattering diagram of a Nevada desert atmosphere has been obtained for radiant energy of 0.40, 0.45, 0.50, and 0.55 μ wavelength, and attenuation coefficients for scattering and absorption have been determined in the same atmosphere for radiant energy of 0.40, 0.50, 0.70, and 0.83 μ wavelength. The ratio of scattered-in to direct radiant flux received from a 4π source has been measured for receiver fields of view ranging from 4° to 64° half-angle and for source-receiver distances ranging from 0.51 to 13.17 mi. By extrapolation of the results to the case of a receiver with field of view of 90° half-angle, attenuation coefficients for aureoled transmission from a 4π source to a flat receiver facing the source have been determined.
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Gibbons et al. (1961) studied this question.
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