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Webster 1913 Edition
Radiometer
Raˊdi-om′e-ter
(rāˊdĭ-ŏm′ē̍-tẽr)
, Noun.
[L.
radius
radius + -meter
: cf. F. radiomètre
.] 1.
(Naut.)
A forestaff.
2.
(Physics)
An instrument designed for measuring the mechanical effect of radiant energy.
☞ 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.
Webster 1828 Edition
Radiometer
RADIOM'ETER
,Noun.
The forestaff, an instrument for taking the altitudes of celestial bodies.
Definition 2024
radiometer
radiometer
English
Noun
radiometer (plural radiometers)
Translations
device that measures radiant energy
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