What are extremely low frequency (ELF) waves? Are they dangerous?

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    Elf-waves are radio frequencies ranging in bandwidth from 3 to 30 hz. In the past the military has used Elfs to communicate with submarines. Because submarines operate deep in the ocean, they cannot access a majority of radio frequencies. Elf-frequencies, however, are capable of penetrating miles of water.

    Over the years there has been some concern that elf-waves are hazardous to both human health and the environment. Although some studies substantiate these claims, the general consensus is that the hazards of elf-waves are no more ominous than those of other forms of radiation.

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