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The integrating nephelometer is a convenient instrument for measuring the atmospheric scattering coefficient at a point and may be used to estimate visual range. This paper describes an instrument of this type, developed for use in a study of the relationship between visibility and the concentration of air pollutants. The instrument has a stabilized response and is suitable for automatic operation over long periods. Difficulties of calibration are discussed and the results of a field trial are presented.
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Garland et al. (1970) studied this question.
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