# jjrakman

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1. ## Question about EM Spectrum, and EM Fields

I've been doing a little more readin on this Natural EMF Meter, and it claims to be able to detect weak DC fields, while ignoring AC. I've played with one myself, and have seen it work. Insomuch as when a person walks about in a room, the needle will go off, seemingly detecting a person's movements. Whether it's actually detecting my movement itself, or the bioelectric field I'm putting off I suppose is up for debate. But the other settings on the meter do seem to do as advertised. Would it be safe to say then, that AC is almost always artificial, while weak DC is mostly natural?
2. ## Question about EM Spectrum, and EM Fields

O.K., so how can these meters be able to differentiate between artificial EMF and natural EMF? http://www.trifield.com/EMF_meter.htm http://www.trifield.com/EMF_natural.htm What am I missing here?
3. ## Question about EM Spectrum, and EM Fields

I guess I'm primarily concerned with the low frequency area. Would it be safe to assume that an AC EMF field is usually artificial whereas a DC EMF field is usually natural?
4. ## Question about EM Spectrum, and EM Fields

One other question. The body also gives off EMF as does the Earth and other biological life forms. What portion of the electromagnetic spectrim do these natural EMF's lie? Also, how can one discern between an artificial EMF and a natural EMF, what properties makes them different?
5. ## Question about EM Spectrum, and EM Fields

Thanks very much for your help!

How's this?
7. ## Question about EM Spectrum, and EM Fields

So if that kind of EMF is not represented in that graph, would there be another graph that does represent it?
8. ## Question about EM Spectrum, and EM Fields

Sorry for being a dolt, I'm trying to wrap my head around these concepts in a Physics for Dummies kind of way. But I'm having a hard time finding 50Hz on this graph: You say it's off the bottom, below Long-Waves? By off the bottom, do you mean to say that it's not represented on the chart?
9. ## Would it be possible...

Can any animals see in the Infrared portion? And are there any animals who can hear infrasonic and ultrasonic wavelengths?
10. ## Question about EM Spectrum, and EM Fields

Mains, do you mean a main electrical line? And do you mean 50MHz? Just below VHF in the Radio section?
11. ## Night Vision

So that would mean that UV light would break down rhodopsin significantly more, is that right?
12. ## Question about EM Spectrum, and EM Fields

O.K., so if I were looking at this graph: What portions would I color in to represent the EMF given off by electrical gear that can be detected by an EMF Meter?
13. ## Would it be possible...

Would you know if there's any case studies on such people that I can read up on?
14. ## Night Vision

So UV light retards or prevents rhodopsin from covering the rods, thus creating poor nightvision? Can you explain the effects?