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Where does background radiation come form?

Answer:
Background radiation can come from all sorts of sources, some natural, some man-made.
Examples include...
  • cosmic rays from space
  • radon gas emitted from the earth's crust
  • electromagnetic radiation from a number of possible sources
  • atomic radiation from nuclear substances.

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First answer by BrainBlocked. Last edit by BrainBlocked. Contributor trust: 457 [recommend contributor recommended]. Question popularity: 3 [recommend question].