Radiometers are devices that measure different kinds of radiation including UV radiation, visible and infrared radiation, and ionizing radiation. Some synonyms for radiometers include dosimeters, spectrometers, and geiger counters. Dosimeters are used to measure the amount of radiation that a person is exposed to over a given time period, while spectrometers analyze the different wavelengths of radiation emitted by a source. Geiger counters are commonly used to detect ionizing radiation in the environment. Other synonyms for radiometers may include radiation meters, radiation detectors, and radiation sensors. These devices play an important role in various applications such as medical imaging, nuclear power, and environmental monitoring.