Note on the reflection of diffuse daylig
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W. E. Knowles Middleton
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Article
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1952
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John Wiley and Sons
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English
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## Abstract The luminous reflectance of still water for the light from an overcast sky is found to be less than the commonly accepted value (__R__ = 0ยท066), because such skies are brighter at the zenith than at the horizon. For a sky three times as bright at the zenith as at the horizon, the value