EMF worries? [RE-wrenches]

[boB Gudgel]

boB Gudgel wrote:
> 
"The radiation I think you are talking about are very low and have some 
DNA mutation energy levels present (UV).   I'm certainly not worried 
about it."

Ooops... I meant that I wasn't worried about the low level RF or 
magnetic or electric fields coming from inverters.


boB Gudgel K7IQ
MidNite/Magnum  Solar/Energy
Washington AC

> Remember that Solar Energy itself is Electro-Magnetic radiation (RF) 
> that hits the earth with an intensity of around 1000 Watts per square 
> meter of area. The EMF from semi-nearby RF sources are on the order of 
> micro-Watts or milli-Watts per square meter of area, unless you are 
> right next to a transmitter antenna... Then it might be a few Watts. 
> 
>  You "feel warm" when you are in the sun.  That's the "heating effect"  
> PLUS ionizing radiation from the UV spectrum that is present, that can 
> actually cause skin cancer if you get too much of it. Can't live with it 
> 
> and can't live without it (Vitamin D). The radiation I think you are 
> talking about are very low  and have some DNA mutation energy levels 
> present (UV).   I'm certainly not worried about it.
> 
> If you have "changing" current (AC) in a wire, it produces EMF (RF).  If 
> 
> it is DC (not changing current flow) in a wire, it creates magnetic 
> fields.   You have to have both, changing electric AND magnetic fields 
> together to create radio waves (EMF, RFI, whatever).
> 
> Also there is "near field" and "far field" radiation.  When you are 
> nearer  to the antenna (or inverter) that is doing the radiating than 
> around one wavelength, (the lower the frequency, the longer the 
> wavelength), then you are in the "near" field, and the magnetic and the 
> electric fields are more predominant.  When you get farther away, like 
> 93 millions miles from the sun or miles away from a transmitter, then it 
> 
> is strictly RF or Electromagnetic Radiation where the magnetic and 
> electric portions of the radiation sustain each other and are considered 
> 
> as RF energy transmission.
> 
> Then there's the recent cell phone concerns that says the problem is not 
> 
> the RF itself, but the the hundreds of Hertz modulation effects that can 
> 
> cause health problems in your head.  Maybe something to that, I really 
> don't know.  If so, it sounds like a near field problem to me.  Probably 
> 
> from the electric field part cuz it sure isn't the heating or ionizing 
> radiation effects.
> 
> My $0.02 for today.
> 
> 
> boB Gudgel K7IQ
> MidNite/Magnum  Solar/Energy
> Washington AC
> 
> 
> Wesley Kennedy wrote:
> > Howdy Wrenches,
> > 
> > The subject of con trails got me wondering about another "less than
> > mainstream" worry some of our clients and potential clients have
> > expressed.  EMF radiation from the inverter.  Apparently "dr" Weil just
> > got on Oprah and gloomed and doomed about EMF being the next epidemic.  
> > 
> 
> > Anyone get the old gauss meter and see how much EMF our inverters are
> > radiating?  Any thoughts on how to handle the concern with folks?  Do we
> > just back away slowly, murmuring soft cooing noises?
> > 
> > 
> > Any thoughts would be appreciated....
> > 
> > Wes Kennedy
> > 
> > Co-Owner
> > 
> > Service, Design and Installation
> > 
> > NABCEP and CoSEIA certified PV installer
> > 
> > Namaste Solar Electric
> > 
> > [Non-text portions of this message have been removed]
> > 



boB Gudgel K7IQ
MidNite/Magnum  Solar/Energy
Washington AC


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