Electromagnetic Fields (EMFs), Extremely Low-Frequency (ELF) and Radiofrequency (RF): What are the Health Impacts?
by Alex Quinn
Particularly now that wireless communications are so closely integrated into our daily lives, electromagnetic fields (EMFs) are all around us.
Our cities, especially the larger ones, are perpetually shrouded in an invisible electrosmog, a ‘sea’ of EMFs through which we swim every day.
But does this momentous development in civilisation come with health effects – and if so, can we do anything to reduce them?
- Electromagnetic fields (EMFS) are all around us, and come in two forms: ELF-RMFS and RF-EMFS
- ELF-EMFS are produced by power lines and many domestic appliances, while RF-EMFS are produced by mobile phones and other communication devices
- Both pose their own set of health problems
- We provide some ideas of how to reduce your EMF exposure
What is ELF-EMF and what are its sources?
It’s important to realise that there are two main forms of EMF: radiofrequency (RF)-EMF and extremely low-frequency (ELF)-EMFs. The frequency range of ELF-EMF is 1–300 Hz, and the Earth’s natural geomagnetic field strength varies from around 60 μT (microtesla) at the magnetic poles to around 30 μT at the equator.
Many man-made sources of ELF-EMF exist. Prime among these artificial sources are power lines and electronic appliances, with vacuum cleaners, electric can-openers, microwave ovens, shavers and hair dryers among the most powerful. These appliances emit ELF-EMF at field intensities ranging from 17.44 to 164.75 μT, measured from 5 cm away. Since the intensity of magnetic fields decreases dramatically with increased distance from the source, the corresponding range of magnetic field intensities at 50 cm is 0.12–1.66 μT.
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Source: http://www.riseearth.com/2014/01/electromagnetic-fields-emfs-extremely.html
