Generally, ELF signals have been used to order a submarine to rise to a shallow depth where it could receive some other form of communication .
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It’s not clear that exposure to ELF radiation is harmful , but there are things you can do to lower your exposure if you are concerned. Your exposure is based on the strength of the ELF radiation coming from each source, how close you are to each, and how long you spend in the field.18 Nis 2017
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