Campbell-Stokes recorder


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Campbell-Stokes recorder

(ˌkæmbəlˈstəʊks)
n
(Physical Geography) an instrument for recording hours of sunshine per day, consisting of a solid glass sphere that focuses rays of sunlight onto a light-sensitive card on which a line is burnt
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CAMPBELL-STOKES RECORDER (a meteorological device for measuring the duration of sunshine, also called a sunshine recorder; Chambers's Science and Technology Dictionary)
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