actinometry
n.
measurement of radiant energy by means of an actinometer
Actinometer
Actinometers are instruments used to measure the heating
power of
radiation. They are used in
meteorology to measure
solar radiation.An actinometer is a chemical system or physical device which determines the number of photons in a beam integrally or per unit time. This name is commonly applied to devices used in the
ultraviolet and visible wavelength ranges. For example, solutions of iron(III) oxalate (e.g. potassium ferrioxalate) can be used as a chemical actinometer, while
bolometers,
thermopiles, and
photodiodes are physical devices giving a reading that can be correlated to the number of photons detected.
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actinometry
Noun
1. measuring the intensity of electromagnetic radiation (especially of the sun's rays)
(hypernym) measurement, measuring, measure, mensuration
Actinometry
(n.)
The measurement of the force of solar radiation.
(n.)
The measurement of the chemical or actinic energy of light.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
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actinometry
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