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What are Electromagnetic Fields? October 31, 2006

Posted by healthyself in Definitions, Electromagnetic Communications, Electromagnetic Field, Electromagnetic pollution, Electromagnetic Radiation, Electrosmog, Frequencies.
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What are ELF electromagnetic fields generated by power lines, wiring and appliances?

“All electric flows have an associated electric field and magnetic field. Both electric and magnetic fields are essentially ‘invisible lines of force’, each associated with a different characteristic of electricity. An electric field is the force created by the attraction and repulsion of electric charges (the cause of electric flow), and is measured in volts per meter (V/m). A magnetic field is a force created as a consequence of the movement of the charges (flow of electricity). The magnitude (intensity) of a magnetic field is usually measured in tesla (T) or sometimes in gauss (G). The intensity of both electric and magnetic fields decreases with distance from the field source. Electric fields are more easily shielded or blocked than magnetic fields.

Both electric and magnetic fields can vary in time. Whereas, direct current (DC) fields have a steady direction, flow rate and strength, alternating current (AC) fields change direction, flow rate and strength over time with a certain frequency.

Most electricity carried in powerlines, wiring and appliances is alternating current (AC). Worldwide, alternating current (AC) moves back and forth (cycles) either 50 or 60 times per second (the latter predominantly in US), that is, at a frequency of 50Hz and 60Hz respectively. Such electromagnetic fields are classified as Extremely Low Frequency (ELF) fields, as their frequency is within the range of 3 to 3000 Hz.”

“Electromagnetic fields produced by sources other than electricity, such as cellular phone antennas, have higher frequencies and are therefore not classified as Extremely Low Frequency (ELF) fields…”

http://www.greenfacts.org

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Comments»

1. Sue - November 15, 2006

As consumers, we are almost consumed by all products. Every new and convenient products has killed us and our young generation. We are poor victims of ELF manufacturers who do not remind us the reverse side effects of those products. They know because they make it. We are blinded by their marketing advertisement.

2. binoo - February 4, 2007

can mechanical vibration noise affect the em field strength?

3. Maria - March 11, 2007

So many people are tired and getting ill.
They are using cell and portable phones in thier homes.
These are emitting microwave frequencies and you can read up on this and more in my web site.
I am a Biofeedback Therapist and have seen the positive effects that the Biopro Technologies have on my clients.
Go to the web site and let me know how I can share more info with you

4. tutie - February 14, 2008

I am hearing a deep, resonant sound which is bass like in TN, is it from the cell towers?

5. Tooth Grinding - November 26, 2008

I am really concerned that ELF electromagnetic fields are dangerous to the general population, particularly for the chronically ill and immunosuppresed. Until there is proof that they are safe, I will continue to limit my use of cell phones and mocrowave ovens.


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