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Electromagnetic Fields Fact Sheet

Reviewed 2018 Electromagnetic Fields fact Sheet What is EMF? Electricity and magnetism are two closely related fundamental forces of the universe which have existed since the beginning of time. Early civilizations were aware of their existence and used the earth's natural magnetic field for navigational purposes. The use of compasses made with naturally occurring magnetic ores is older than written historical records. Until about 100 years ago, human exposure to electric and magnetic Fields was limited to naturally occurring Fields . With the introduction of electricity into homes and businesses, the potential for Electromagnetic field (EMF) exposure has significantly increased.

Electromagnetic Fields Fact Sheet. ... An important characteristic of an EMF is the frequency of the electrical sourceFrequency is the . change in the flow of electric current over time. It can range from zero for a direct current (DC) ... . . . that exposures to extremely low-frequency electric and magnetic fields (ELFEMF) -

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