electromagnetic radiation - Page 2

frmky · 2010-09-01, 07:42

Both cell phone and WiFi radiation are microwave radiation. There are no known molecular dissociative resonances for biologically important molecules in this region. There is a broad, weak rotational resonance for polar molecules, mainly water, at these frequencies. This is why your microwave oven works. However, since it's an omni-directional antenna, the power drops quickly with distance. This radiation will be absorbed by the water in the outer layers of your skin, warming it up a bit. And by a bit, I mean much, much less than the sun does when you go outside on a clear day. So no, no need to worry.

xilman · 2010-09-01, 10:41

Quote:

Originally Posted by retina

Wildly out of the context of this thread, but yes of course, if you are getting to the plasma stage then you have already killed far too many people to be able to continue with that sort of transmitter.

In the context of the original question, proximity to the aerial is all that is really needed to consider. Staying continuously very close of an RF transmission (i.e. with the aerial taped to your head) and you are asking for problems. But keeping your distance, and combined with the low power WiFi, and the risks are as good as zero.

Oh, I agree completely.

My disagreement is with the widely stated, widely believed and yet completely false notion that because a microwave photon is not of sufficient energy to ionize an atom or molecule, microwaves can not cause ionization.

Paul

nucleon · 2010-09-03, 12:43

I get headaches from EM sources.

Mainly 802.11(a|b|g|n) wireless and 2G GSM mobile phone wireless. Never been game to try phone calls on a 3G mobile. I can't use a persistent 802.11 connection. I can use it for adhoc usage say sub 10mins.

My phone calls on a 2G mobile are very short sub 5mins. I think at about 3mins-10mins the headaches start and get worse.

I tried playing with a new mobile - I think it had both a 3g antena and 802.11 antena. Nothing major - just going through the features checking out the menus. After say 15mis+ looking at it - it was enough to give me headaches.

Even though I'm happily playing on my pc for hours+ - and no dramas.

It may not be ionizing but it definately has an effect on me.

-- Craig

CRGreathouse · 2010-09-03, 12:51

Quote:

Originally Posted by nucleon

I get headaches from EM sources.

I'd love to see a double-blind of that.

chalsall · 2010-09-03, 17:12

Quote:

Originally Posted by nucleon

I get headaches from EM sources. [snip] Even though I'm happily playing on my pc for hours+ - and no dramas.

So EM at 60/50 Hz caused by the electrical mains has no effect, even though it's a much larger amount of energy absorbed by your body. (You can actually measure this with a sensitive volt meter connected between you and a true earth/ground.)

Quote:

Originally Posted by nucleon

After say 15mis+ looking at it - it was enough to give me headaches.

Are you sure your headaches are not caused because of bad eyesight, rather than EM?

RickC · 2010-09-06, 21:37

Here's an interesting article:

http://www.emf-health.com/articles-celltower.htm

Here's a search to help locate antennas:

http://www.antennasearch.com/

Rick

CRGreathouse · 2010-09-06, 22:00

Quote:

Originally Posted by RickC

Here's an interesting article:

Looks cherrypicked. No surprise, given that their business model appears to rely on consumer fear of antennas.

nucleon · 2010-09-11, 18:15

Quote:

Originally Posted by CRGreathouse

I'd love to see a double-blind of that.

Agreed. I'd like to be able to test myself to whether it's psychological. As there's a lot of articles about EM sensitivity, and they tend to make out the person that has EM sensitivity as "crazy" or a loon.

But for it's quite consistent. Just on Friday I was working with someone on a 3g phone setting up IPSEC VPNs details. After 10mins, I could feel the headache coming on.

-- Craig

CRGreathouse · 2010-09-11, 18:24

If you ever set something up to test that, be sure to tell us! I, at least, would be interested.

joblack · 2010-09-11, 22:59

I've got some gold dental fillings and I 'feel' in in the teeth if I enable my WiFi net. As for the risks - keep cool another factors (smoking, ...) are more significant.

RickC · 2010-09-14, 22:35

This is the antenna they put in.

http://cellmax.se/UploadFiles/Files/CMA_TRI_6515_A.pdf

2010-09-06, 21:37	#17
RickC Mar 2003 3²·5 Posts	more Here's an interesting article: http://www.emf-health.com/articles-celltower.htm Here's a search to help locate antennas: http://www.antennasearch.com/ Rick

2010-09-14, 22:35	#22
RickC Mar 2003 3²·5 Posts	antenna specs This is the antenna they put in. http://cellmax.se/UploadFiles/Files/CMA_TRI_6515_A.pdf

2010-09-01, 07:42	#12
frmky Jul 2003 So Cal 84A₁₆ Posts	Both cell phone and WiFi radiation are microwave radiation. There are no known molecular dissociative resonances for biologically important molecules in this region. There is a broad, weak rotational resonance for polar molecules, mainly water, at these frequencies. This is why your microwave oven works. However, since it's an omni-directional antenna, the power drops quickly with distance. This radiation will be absorbed by the water in the outer layers of your skin, warming it up a bit. And by a bit, I mean much, much less than the sun does when you go outside on a clear day. So no, no need to worry.

2010-09-03, 12:43	#14
nucleon Mar 2003 Melbourne 5·103 Posts	I get headaches from EM sources. Mainly 802.11(a\|b\|g\|n) wireless and 2G GSM mobile phone wireless. Never been game to try phone calls on a 3G mobile. I can't use a persistent 802.11 connection. I can use it for adhoc usage say sub 10mins. My phone calls on a 2G mobile are very short sub 5mins. I think at about 3mins-10mins the headaches start and get worse. I tried playing with a new mobile - I think it had both a 3g antena and 802.11 antena. Nothing major - just going through the features checking out the menus. After say 15mis+ looking at it - it was enough to give me headaches. Even though I'm happily playing on my pc for hours+ - and no dramas. It may not be ionizing but it definately has an effect on me. -- Craig

2010-09-11, 18:24	#20
CRGreathouse Aug 2006 13533₈ Posts	If you ever set something up to test that, be sure to tell us! I, at least, would be interested.

2010-09-11, 22:59	#21
joblack Oct 2008 n00bville 728₁₀ Posts	I've got some gold dental fillings and I 'feel' in in the teeth if I enable my WiFi net. As for the risks - keep cool another factors (smoking, ...) are more significant.