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De - Pt| English Dictionary: Radiometer | by the DICT Development Group |
| 2 results for Radiometer | |
| From WordNet (r) 3.0 (2006) [wn]: | |
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| From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
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Radiometer \Ra`di*om"e*ter\, n. [L. radius radius + -meter: cf. F. radiom[8a]tre.] 1. (Naut.) A forestaff. 2. (Physics) An instrument designed for measuring the mechanical effect of radiant energy. Note: It consists of a number of light discs, blackened on one side, placed at the ends of extended arms, supported on an a pivot in an exhausted glass vessel. When exposed to rays of light or heat, the arms rotate. | |
