English Dictionary: actinometer | by the DICT Development Group |
2 results for actinometer | |
From WordNet (r) 3.0 (2006) [wn]: | |
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From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Actinometer \Ac`ti*nom"e*ter\, n. [Gr. [?], [?], 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. |