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Coefficient of refraction
(1) The ratio of the angle of refraction at the point of observation to the angle, at the centre of the Earth, subtended between the point of observation and the point observed. (2) The ratio of the average radius of curvature of the Earth to the average radius of curvature of the path of the electromagnetic ray. (3) Half the ratio specified in definition (2).
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- Part of Speech: noun
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- Industry/Domain: Earth science
- Category: Mapping science
- Company: American Congress on Surveying & Mapping
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