silver-disk pyrheliometer

[′sil·vər ′disk ¦pīr‚hē·lē′äm·əd·ər] (engineering) An instrument used for the measurement of direct solar radiation; it consists of a silver disk located at the lower end of a diaphragmed tube which serves as the radiation receiver for a calorimeter; radiation falling on the silver disk is periodically intercepted by means of a shutter located in the tube, causing temperature fluctuations of the calorimeter which are proportional to the intensity of the radiation.

单词	silver-disk pyrheliometer
释义	silver-disk pyrheliometer silver-disk pyrheliometer [′sil·vər ′disk ¦pīr‚hē·lē′äm·əd·ər] (engineering) An instrument used for the measurement of direct solar radiation; it consists of a silver disk located at the lower end of a diaphragmed tube which serves as the radiation receiver for a calorimeter; radiation falling on the silver disk is periodically intercepted by means of a shutter located in the tube, causing temperature fluctuations of the calorimeter which are proportional to the intensity of the radiation.
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