Noun
A forestaff.
An instrument designed for measuring the mechanical effect of radiant energy.
Source: Webster's dictionaryA microwave radiometer and an infrared radiometer and the radiometer reference horns were rigidly mounted to a convert diameter parabolic radiometer antenna mounted near the bottom of the mast. Source: Internet
At these very high vacuums the effect of photon radiation pressure on the vanes can be observed in very sensitive apparatus (see Nichols radiometer ) but this is insufficient to cause rotation. Source: Internet
Finally, if light pressure were the motive force, the radiometer would spin in the opposite direction, as the photons on the shiny side being reflected would deposit more momentum than on the black side where the photons are absorbed. Source: Internet
Its radiometer readings suggested that Mercury has a night time temperature of −183 °C (−297 °F ) and maximum daytime temperatures of 187 °C (369 °F). Source: Internet
Movement with black-body radiation When the radiometer is heated in the absence of a light source, it turns in the forward direction (i.e. black sides trailing). Source: Internet
Scientific observations The microwave radiometer made three scans of Venus in 35 minutes on December 14, 1962 starting at 18:59 UTC. Source: Internet