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What is Natural vs. Man-Made Background Radiation about?

Natural sources contribute about 81% of background radiation exposure annually, with radon contributing the largest portion at 55%. Cosmic radiation and radiation from soil and building materials also contribute to natural background radiation. While radiation levels can vary in different locations, the average annual background radiation dose for someone in the US is about 360 millirem. Man-made sources account for the remaining 19% and include medical procedures such as x-rays, which contribute the larges

Author

Dingtone

Language

EN