What is the unit of measurement for absorbed radiation dose?

The unit of measurement for absorbed radiation dose is the Gray (Gy). The Gray quantifies the amount of ionizing radiation absorbed by a material, particularly in biological tissue. One Gray is defined as the absorption of one joule of radiation energy by one kilogram of matter. This unit is vital in radiation protection and medicine, as it helps assess risks associated with radiation exposure by providing a standardized measurement of how much radiation is absorbed internally by the body.

In comparison, the Joule measures energy in general, while the Sievert (Sv) is used to measure the biological effect of radiation, considering factors such as the type of radiation and its impact on human health. The Coulomb (C) is a unit for electric charge and does not pertain to absorbed radiation dose. Thus, the Gray is the appropriate unit for assessing the amount of radiation energy absorbed, making it the correct choice in this context.