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Any of several radiometric instruments, such as a pyrheliometer, used chiefly for meteorological measurements of terrestrial and solar radiation.
ac′ti·no·met′ric (-nō-mĕt′rĭk), ac′ti·no·met′ri·cal adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
the measurement of the heating power of light in the violet and ultraviolet range. — actinometrist, n. — actinometric, actinometrical, adj.See also: Light
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|Noun||1.||actinometry - measuring the intensity of electromagnetic radiation (especially of the sun's rays)|
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