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Electromagnetic fields are a combination of electric and magnetic fields of force. They are generated by natural phenomena like the Earth’s magnetic field but also by human activities, mainly through the use of electricity.
Electromagnetic fields can affect our metabolism, due to the cell recognizes the electromagnetic field and produce biochemicals.
Here's an image that show you how electromagnetic fields look:
Some sources of electromagnetic fields:
- Mobile telephones
- Video display units
- TV
- Electric engines in cars