Rope, ribbon, or tape with yellow and magenta bands may be used as a barrier to a radiological hazard. In order to measure how much radiation a person has been exposed the following units are used. Most of the instruments used to measure radiation exposure read out in R . A unit for measuring biological damage from radiation. Most of the radiation exposure during an incident will be from gamma or x-rays.
Radiation exposure is measured with equipment known as dosimetry .
Dosimetry serves a similar function as odometers in cars. Odometers tell us how many miles have been driven while dosimeters tell us how much radiation exposure has been received. The units of radiation exposure on most self-reading dosimeters will be in R . This tells workers how much radiation exposure has been received. This is exposure over a period of time and is very similar to taking a trip in a car.