General Science • PhysicsHard
Which instrument is used to measure the intensity of solar radiation directly from the sun?
A. Pyranometer
B. Pyrheliometer✓ Correct Answer
C. Bolometer
D. Actinometer
💡 Solution & Explanation
A pyrheliometer is a precision meteorological instrument specifically designed to measure direct beam solar irradiance by tracking the sun continuously throughout the day. Pyranometers, by contrast, measure global solar radiation encompassing both direct beam and diffuse sky radiation on a flat surface. These instruments are vital for solar energy assessments and climatological research.
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