'Radiometer' definitions:
Definition of 'radiometer'
(from WordNet)
noun
Meter to detect and measure radiant energy (electromagnetic or acoustic)
Definition of 'Radiometer'
From: GCIDE
- Radiometer \Ra`di*om"e*ter\ (r[=a]`d[i^]*[o^]m"[-e]*t[~e]r), n. [L. radius radius + -meter: cf. F. radiom[`e]tre.]
- 1. (Naut.) A forestaff. [1913 Webster]
- 2. (Physics) An instrument designed for measuring the mechanical effect of radiant energy. [1913 Webster]
- Note: It consists of a number of light disks, blackened on one side, placed at the ends of extended arms, supported on a pivot in an exhausted glass vessel. When exposed to rays of light or heat, the arms rotate. [1913 Webster]