Radiation measurement refers to the process of detecting and quantifying ionizing radiation, which includes particles and electromagnetic waves that can be harmful to living organisms. Instruments such as Geiger counters, scintillation detectors, and dosimeters are commonly used to measure radiation levels. These devices help ensure safety in environments where radiation is present, such as hospitals, nuclear power plants, and research facilities. The units of measurement for radiation include sieverts for biological effects, becquerels for radioactivity, and grays for absorbed dose. Understanding these measurements is crucial for assessing exposure risks and implementing safety protocols to protect both workers and the public from potential radiation hazards.