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radiometer

ra·di·om·e·ter

radiometer

 
pronunciation:
reI di a mih tr
features:
Word Parts
part of speech: noun
definition: an instrument for measuring radiant energy or transforming radiant energy into mechanical energy, consisting of vertical vanes that absorb more heat on one side than the other, so that they rotate around an axis when irradiated.
derivations: radiometric (adj.), radiometry (n.)