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Bookmark or Share- Radiation Sources and Doses | US EPAAccording to the National Council on Radiation Protection and Measurements (NCRP), the average annual radiation dose per person in the U.S. is 6.2 millisieverts (620 millirem) millirem). The pie chart below shows the sources of this average dose.
- Radiation Terms and Units | US EPA - U.S. Environmental Protection AgencyScientists measure radiation in different ways. Sometimes, they measure the dose that a person receives from a radioactive source, and sometimes they measure the amount of radioactivity in water, or in soil, or in the air. These measurements are taken to determine if safety actions are needed.
- How to Measure Radiation and RadioactivityRadiation dose is the amount of radiation absorbed by the body. Radiation doses are reported in gray (Gy) or sievert (Sv), which are international units. In the United States, we use rad or rem. Alarming dosimeters can be used by first responders and safety officers to monitor dose in real time.
- What is radiation dose, and how is it measured? - www ...Radiation dose is defined as the energy deposited by radiation per unit mass of material. There is a special unit for this quantity: the gray (often abbreviated as “Gy”), which is equal to one joule per kilogram.
- Doses In Our Daily Lives | NRC.govOn average, Americans receive a radiation dose of about 0.62 rem (620 millirem) each year. Half of this dose comes from natural background radiation . Most of this background exposure comes from radon in the air, with smaller amounts from cosmic rays and the Earth itself.
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