An instrument for recording variations in the intensity of solar radiation.
| 单词 | θ76164 |
| 释义 | the world > matter > physics > electromagnetic radiation > solar radiation > [noun] > instrument measuring (5) actinograph1840 An instrument for recording variations in the intensity of solar radiation. radiograph1880 An instrument for measuring and recording the duration and intensity of sunshine. Cf. heliograph, n. 3. Now disused. pyranometer1916 An instrument for measuring the amount of radiation incident from the entire sky on a horizontal surface. solarimeter1926 A device for measuring the total intensity of radiation incident upon a surface. actinometer1955 Originally: an instrument for measuring the heating power of the sun's radiation. Later more widely: one for measuring the intensity of solar… |
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