EMF stands for electromagnetic fields, or radiation. Electromagnetic fields and radiation occur naturally in our world, and we’ve created very unnatural sources as well.
Naturally, our bodies and our earth are electrical in nature. What is EMF radiation in the natural world? Think things like the earth’s natural magnetic field, lightening and plain old visible light. The difference between what is naturally occurring in the earth and what we’ve produced in our world has to do with polarization.
EMF is measured on a spectrum ranging from low frequency to high frequency.
What is EMF at a low frequency? This would be the radiation from power lines, radio and television, cell phones, baby monitors and microwaves. These devices give off non-ionizing electromagnetic radiation. Many of these are also in the category of extremely low frequency, or ELF.
What is EMF at a high frequency? This would be ultraviolet radiation and x-rays. This category isn’t something we come in contact with on a daily basis, and so it’s not generally a huge concern unless you’re working in a particular environment that has these types of EMF radiation.
Aside from these, there are radio-frequency EMF, which come in the form of wireless technologies. What are EMF in radio-frequency form? Think cell phones, wireless networks, laptops, blue-tooth, radar, WI-FI hot spots and broadcast towers.