Ångström Compensation Pyrheliometer
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Ångström Compensation Pyrheliometer
An instrument developed by K. Ångström for the measurement
of
direct solar radiation. The radiation receiver
station consists of two identical manganin strips whose temperatures are
measured by attached thermocouples. One of the strips is shaded,
whereas the other is exposed to sunlight. An electrical heating
current is passed through the shaded strip so as to raise its
temperature to that of the exposed strip. The electric power required
to accomplish this is a measure of the solar radiation. See
actinometer, pyrheliometer. Compare Ångström pyrgeometer.
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
