What is the unit of measurement for radiation exposure?

The unit of measurement for radiation exposure is the Roentgen (R). This unit specifically measures the exposure to ionizing radiation, particularly X-rays and gamma rays, in air. It quantifies the amount of ionization produced in a given volume of air by X-rays or gamma rays, allowing it to be used as a practical measure for assessing radiation levels in the environment and ensuring safety standards.

The Gray (Gy) is the unit of absorbed dose, indicating the amount of radiation energy absorbed per kilogram of matter, regardless of the type of radiation. While it is crucial in measuring the dose a body receives, it does not specifically characterize exposure levels like the Roentgen.

The Sievert (Sv) is the unit for dose equivalent, which takes into account the biological effect of the radiation and is used to assess the risk associated with radiation exposure to living organisms. It reflects the harm that radiation can cause, factoring in the type of radiation and the sensitivities of different tissues, but is not a measure of exposure directly.

The Curie (Ci) is a unit used to quantify radioactivity, specifically measuring the decay of radioactive materials, indicating how many decays occur per second. It does not relate to the exposure of individuals to radiation, making