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Webster 1913 Edition


Actinometer

Acˊti-nom′e-ter

,
Noun.
[Gr. [GREEK], [GREEK], ray +
-meter
]
(a)
An instrument for measuring the direct heating power of the sun’s rays.
(b)
An instrument for measuring the actinic effect of rays of light.

Definition 2024


actinometer

actinometer

English

Noun

actinometer (plural actinometers)

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

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