actinometryn.
/ˌaktᵻˈnɒmᵻtri/, U.S. /ˌæktəˈnɑmətri/ The use of an actinometer (actinometer n. 1); measurement of light intensity with the aid of an actinometer.
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the world > matter > physics > electromagnetic radiation > heat > [noun] > measurement of heat
calorimetry1858
actinometry1860
1860 M. F. Maury Physical Geogr. Sea (ed. 8) vii. §367 We have in the land and sea-breezes a natural index to the actinometry of sea and land, which shows that the radiating forces of the two are very different.
1926 Ecology 7 284 The methods of Actinometry: In this field there have been two main lines of development.
2006 E. C. Wood & R. C. Cohen in D. E. Heard Analyt. Techniques Atmospheric Measurem. iv. 204 Actinometry can also be based on photolysis of N2O instead of ozone.
This entry has been updated (OED Third Edition, November 2010; most recently modified version published online December 2021).
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n.1860- vibrants
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