general/electromagnetic-radiation-meters
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Radiometer
Device for measuring the radiant flux (power) of electromagnetic radiation
Microwave power meter
Electrical test equipment
Nichols radiometer
Tool for measuring radiation pressure
Pyrgeometer
Device which measures infra-red radiation
Net radiometer
Instrument for measuring the net radiation on Earth's surface
Photometer
Instrument to measure light intensity
Microwave radiometer
Tool measuring EM radiation at 0.3–300-GHz frequency