iPods

Anyone know if iPods are fairly safe for people with emf sensitivities? Thanks.
blessings,
Paresh

http://home.earthlink.net/~sunmoonyoga/

[Non-text portions of this message have been removed]

> Anyone know if iPods are fairly safe for people with emf sensitivities?

I suspect that they could bother someone, especially if worn on
the body, and especially if they have a color display. Also
the earphones could cause problems.

I use an iRiver IFP-799 MP3 player in my car, and it doesn't bother
me, but it has no color display (B&W with backlight usually off),
it is not on my person (it sits on the passenger seat), and
I don't use earphones (it plugs into my car stereo).

Marc

There was some report on how an iPod could affect a pacemaker.
Marc's advice sounds good.

Bill

On Dec 6, 2007 1:04 PM, Marc Martin <[hidden email]> wrote:


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I tried my CellSensor 1 axis AC Gauss meter on my two earphones over
an mp3 player and did some 'amateur' measures (I also tried with a
compass):

- little earphones from a MP3 player:
oscillations between 0 and 1mG touching the earphone,
oscillations between 0 and 0.5mG at aprox 1cm.
and 20º deviation touching the border of a compass.

- medium-size headphones with micro mainly for skype or VOIP talk:
5-50mG oscillations touching the earphone
1-3mG oscillations at aprox 1cm of the earphone, and 90º deviation
touching the border of a compass.
 
I'm really surprised by the relatively high measurements on the
medium-size headphones. I'm wondering how this could affect the
health in positive or negative way.

Best regards,
Daniel


--- In [hidden email], "Marc Martin" <marc@...> wrote:
>
> > Anyone know if iPods are fairly safe for people with emf
sensitivities?

> I'm really surprised by the relatively high measurements on the
> medium-size headphones. I'm wondering how this could affect the
> health in positive or negative way.

Yes, the cheap Sony headphones we have at work cause me sharp
pains in my head almost immediately. I have some nicer
headphones at home that I can wear much longer without problems.
And there is a company that makes shielded headphones for
folks who wear headphones all day professionally -- someone
here bought a pair and confirmed that they were much more
tolerable.

Marc

Thanks for the replies. I have a walkman with no ill effects. I don't know anything about flash drive - is it less of an emf source than hard drives?
blessings,
Paresh

http://home.earthlink.net/~sunmoonyoga/

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> I don't know anything about flash drive - is it less of an emf
> source than hard drives?

I would assume so, although I don't have any hard evidence to back
that up! My MP3 player uses a flash drive, and is supposed to
last 40 hours on a single AA battery, so it's not using much
power.

Marc

Were those measurements with music playing? If so it's probably
the magnets in the speakers.

I personally don't like the idea of having audio frequency fields near my
head. I have felt that phones are a problem, but not sure if it's the audio
frequencies or high frequency noise on the line (which is tough to filter
out).

The good news is that the induced electromotive force from an oscillating
magnetic field
is proportional to the area the field passes through. So, a few milligauss
at your
ear might be much safer than a few milligauss over your whole head. (Then
again,
for other conceivable mechanisms of harm, this might not be true).

I've met very sensitive people who don't notice a reaction from headphones.
If they were a problem there are expensive electrostatic ones that might be
safer, and those cheap airline air tubes that certainly would be.

Bill

On Dec 7, 2007 12:45 PM, Marc Martin <[hidden email]> wrote:


[Non-text portions of this message have been removed]

Hi Bill,

Yes, my measurements were with music playing.
Daniel

--- In [hidden email], "Bill Bruno" <wbruno@...> wrote:
>
> Were those measurements with music playing? If so it's probably
> the magnets in the speakers.
>
> I personally don't like the idea of having audio frequency fields
near my
> head. I have felt that phones are a problem, but not sure if it's
the audio
> frequencies or high frequency noise on the line (which is tough to
filter
> out).
>
> The good news is that the induced electromotive force from an
oscillating
> magnetic field
> is proportional to the area the field passes through. So, a few
milligauss
> at your
> ear might be much safer than a few milligauss over your whole head.
(Then
> again,
> for other conceivable mechanisms of harm, this might not be true).
>
> I've met very sensitive people who don't notice a reaction from
headphones.
> If they were a problem there are expensive electrostatic ones that
might be

> Were those measurements with music playing? If so it's probably
> the magnets in the speakers.
>
> I personally don't like the idea of having audio frequency fields near my
> head. I have felt that phones are a problem, but not sure if it's the
> audio
> frequencies or high frequency noise on the line (which is tough to filter
> out).


You can use the Air Tube Headsets (if your audio device has a 2.5mm jack for
headsets) to eliminate speaker emissions near the head. They are not stereo
however. You can use 2 of them with a Y-adapter, but still only get mono
sound. See http://www.lessemf.com/cellphon.html#236

Emil