الرئيسية » أرشيف الوسم : atmosphere

أرشيف الوسم : atmosphere

background radiation

Low inten­sity ionizing radiation present on the surface of the earth and in the atmosphere as a result of cosmic radiation and the presence of radio­isotopes in the earth’s rocks, soil, and atmosphere. The radioisotopes are either natural or the result of nu­clear fallout or waste gas from power stations. …

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