Actinometer Definition

ăktə-nŏmĭ-tər

noun

Any of several radiometric instruments, such as a pyrheliometer, used chiefly for meteorological measurements of terrestrial and solar radiation.

American Heritage

An instrument for measuring the intensity of the sun's rays, or the actinic effect of light rays.

Webster's New World

Webster's New World

(physics) A device used to measure the heating power of electromagnetic radiation, especially that of solar radiation.

Wiktionary

Other Word Forms of Actinometer

Singular:

actinometer

Plural:

actinometers

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