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actinometer

[ak-tuh-nom-i-ter] /ˌæk təˈnɒm ɪ tər/
noun
1.
a device for measuring intensity of radiation, especially that of the sun.
Compare actinograph.
Origin of actinometer
1825-1835
1825-35; actino- + -meter
Related forms
actinometric
[ak-tin-oh-me-trik, ak-tuh-noh-] /ækˌtɪn oʊˈmɛ trɪk, ˌæk tə noʊ-/ (Show IPA),
actinometrical, adjective
actinometry, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for actinometer
  • The actinometer should be used in an area free of shadows, and with a non-reflecting background.
British Dictionary definitions for actinometer

actinometer

/ˌæktɪˈnɒmɪtə/
noun
1.
an instrument for measuring the intensity of radiation, esp of the sun's rays
Derived Forms
actinometric (ˌæktɪnəʊˈmɛtrɪk), actinometrical, adjective
actinometry, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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actinometer in Science
actinometer
  (āk'tə-nŏm'ĭ-tər)   
Any of several instruments used to measure radiation, such as a pyrheliometer.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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