Actinometer
The Optical Dictionary · 1904 · p. 2
An instrument for measuring the intensity of radiation by means of its photo-chemical effect. (Tithonometer.)
Bu kavram başka kaynaklarda da geçiyor
The American Illustrated Medical Dictionary (1913)
A Dictionary of Aviation (1911)
The American Dictionary and Cyclopedia (1910)
Chamber's Twientieth Century Dictionary (1908)
Chandler's Encyclopedia (1898)
Nuttall's Standard Dictionary of the English Language (1890)
Zell's Condensed Dictionary (1879)
Dictionary of Science, Literature and Art (1854)
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