Conductive sheet on bed really works!

I'm sure to some this will come as no surprise, but I put a conductive
sheet on my bed and it seems to make a big difference! Note that
my mattress is foam and the bed wood; if there was metal around
it I doubt the sheet would make much difference.

It did not help my tinnitus, but did help me relax, I slept better,
and my spine feels better. It almost feels like I do after accupuncture.
(based on just 2 nights).

I did not expect much improvement because I already wired a light switch
so that it kills power to the outlets behind the bed.

I decided to see if I could measure the change using a regular digital
multimeter (DMM). It has 11 Mohm impedence, and measures in millivolts.
(Unfortunately, based on my quick calculation, that's not enough impedance
to measure voltages across small objects at 60Hz. If anyone knows of
gigaohm impedence AC voltmeter for under $200 please let me know.)

Despite that, I was able to see a clear difference on the meter between
when the sheet was there or not. I could also see the effect of switching
the outlets on and off. I made 6 inch electrodes out of aluminum foil to
increase the capacitance. I put them 30 inches apart, corresponding to my
head and the base of my spine. With the outlets on and no conducting
sheet I got about 45 mV. (Note that all these measurements are probably
way low due to inadquate impedence of the meter). With the outlets off
it dropped to 15 mV. With outlets on but the sheet under (and insulated
from the electrodes) I got 10mV, and outlets off 2mV. This was without
grounding the sheet. Grounding the sheet using the outlets ground wire
had unpredictable effects, sometimes getting down to 1mV with the
power to the outlet off, but sometimes nearly negating the effect of the
sheet. Probably a dedicated ground as my baubiologist friend recommended
is the right idea.

I think grounding the is most important for addressing vertical fields,
but the horizontal ones may affect the spinal cord most.

It makes sense to have the sheet go all the way to the edges of the bed.
My feet frequently hang off the end of the bed--not sure how I can address
that other than with a faraday tent. Anyone tried those?

Bill


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

Hello Bill,

I am sorry, but what you measutre there is utterly nonsense.
The potential difference is not good.
Your measuring system is used by fraudulent sellers of mattresses and
sheets, in order to sell their product in fooling the clients.

If one does not know how to measure, one should refrain from that.

On: http://www.baubiologie.net/Veroeffentlichungen/Elektrosmog.shtml

Achtung Abschirmdecke: Entspannt ist nicht entfeldet! (PDF, 280 KB)

And on:
http://www.innenraumanalytik.at/pdfs/matten.pdf

Those are studies about those bed products, however in german.

Greetings,
Charles Claessens
member Verband Baubiologie
www.milieuziektes.nl
www.milieuziektes.be
www.hetbitje.nl
checked by Bitdefender



----- Original Message -----
From: "Bill Bruno" <[hidden email]>
To: <[hidden email]>
Sent: Sunday, September 23, 2007 19:04
Subject: [eSens] Conductive sheet on bed really works!

I'm not saying the measurements are accurate (but they would be with a
higher impedance meter). But they do show that the sheet makes a
difference.
Can there be any other interpretation? It's unfortunate that it's not
accurate
but I think it's a great demonstration.

I don't read German but my wife does and I agree with the d.e. article that
body
voltage is not the right thing to measure. Yes ideally I'd like to use one
of those
cubes. My set-up is simply a crude cube that only works in one dimension,
but it's the dimension that my spinal cord is on at night.

I also imagine a good low frequency meter would work better but my TriField
is not
nearly sensitive enough.

I'm sure you could do better, but this is not nonsense. The size of the
aluminum foil
balls defines a capacitance. The voltmeter, with finite impedence allows
current to
flow between them and measures that and converts it to voltage. That step
is flawed
because the small current is enough to discharge the capacitors, but clearly
the reading
will go up if there's a bigger field, and down if there's a lower field.
The readings were
rather stable and fairly reproducible. If the foil balls are made 3 times
smaller the
voltages drop to the limit of the meter.

Bill

On 9/23/07, charles <[hidden email]> wrote:

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

Hi bill, what is the sheet made of? Is the idea that the sheet
conducts whatever is around instead of one's body? How is it that
the sheet doesn't conduct it and then transfer it to the body?
(nightmare!)

I wonder if it would help me with the terrible problems i get at
night. I have a foam mattress, but my bed does have about 20 metal
screws holding it together. (How else to hold the thing together - i
tried the 'no more nails' glue and it was crap!)
best,jane

--- In [hidden email], "Bill Bruno" <wbruno@...> wrote:
>
> I'm sure to some this will come as no surprise, but I put a
conductive
> sheet on my bed and it seems to make a big difference! Note that
> my mattress is foam and the bed wood; if there was metal around
> it I doubt the sheet would make much difference.
>
> It did not help my tinnitus, but did help me relax, I slept better,
> and my spine feels better. It almost feels like I do after
accupuncture.
> (based on just 2 nights).
>
> I did not expect much improvement because I already wired a light
switch
> so that it kills power to the outlets behind the bed.
>
> I decided to see if I could measure the change using a regular
digital
> multimeter (DMM). It has 11 Mohm impedence, and measures in
millivolts.
> (Unfortunately, based on my quick calculation, that's not enough
impedance
> to measure voltages across small objects at 60Hz. If anyone knows
of
> gigaohm impedence AC voltmeter for under $200 please let me know.)
>
> Despite that, I was able to see a clear difference on the meter
between
> when the sheet was there or not. I could also see the effect of
switching
> the outlets on and off. I made 6 inch electrodes out of aluminum
foil to
> increase the capacitance. I put them 30 inches apart, corresponding
to my
> head and the base of my spine. With the outlets on and no
conducting
> sheet I got about 45 mV. (Note that all these measurements are
probably
> way low due to inadquate impedence of the meter). With the outlets
off
> it dropped to 15 mV. With outlets on but the sheet under (and
insulated
> from the electrodes) I got 10mV, and outlets off 2mV. This was
without
> grounding the sheet. Grounding the sheet using the outlets ground
wire
> had unpredictable effects, sometimes getting down to 1mV with the
> power to the outlet off, but sometimes nearly negating the effect
of the
> sheet. Probably a dedicated ground as my baubiologist friend
recommended
> is the right idea.
>
> I think grounding the is most important for addressing vertical
fields,
> but the horizontal ones may affect the spinal cord most.
>
> It makes sense to have the sheet go all the way to the edges of the
bed.
> My feet frequently hang off the end of the bed--not sure how I can
address
> that other than with a faraday tent. Anyone tried those?
>
> Bill
>
>
> [Non-text portions of this message have been removed]
>

and remembering of course, that it FELT better. msg ends.

--- In [hidden email], "Bill Bruno" <wbruno@...> wrote:
>
> I'm not saying the measurements are accurate (but they would be
with a
> higher impedance meter). But they do show that the sheet makes a
> difference.
> Can there be any other interpretation? It's unfortunate that it's
not
> accurate
> but I think it's a great demonstration.
>
> I don't read German but my wife does and I agree with the d.e.
article that
> body
> voltage is not the right thing to measure. Yes ideally I'd like to
use one
> of those
> cubes. My set-up is simply a crude cube that only works in one
dimension,
> but it's the dimension that my spinal cord is on at night.
>
> I also imagine a good low frequency meter would work better but my
TriField
> is not
> nearly sensitive enough.
>
> I'm sure you could do better, but this is not nonsense. The size
of the
> aluminum foil
> balls defines a capacitance. The voltmeter, with finite impedence
allows
> current to
> flow between them and measures that and converts it to voltage.  
That step
> is flawed
> because the small current is enough to discharge the capacitors,
but clearly
> the reading
> will go up if there's a bigger field, and down if there's a lower
field.
> The readings were
> rather stable and fairly reproducible. If the foil balls are made
3 times and
> > sheets, in order to sell their product in fooling the clients.
> >
> > If one does not know how to measure, one should refrain from that.
> >
> > On:
http://www.baubiologie.net/Veroeffentlichungen/Elektrosmog.shtml
> >
> > Achtung Abschirmdecke: Entspannt ist nicht entfeldet! (PDF, 280
KB) conductive
> > > sheet on my bed and it seems to make a big difference! Note that
> > > my mattress is foam and the bed wood; if there was metal around
> > > it I doubt the sheet would make much difference.
> > >
> > > It did not help my tinnitus, but did help me relax, I slept
better,
> > > and my spine feels better. It almost feels like I do after
accupuncture.
> > > (based on just 2 nights).
> > >
> > > I did not expect much improvement because I already wired a
light switch
> > > so that it kills power to the outlets behind the bed.
> > >
> > > I decided to see if I could measure the change using a regular
digital
> > > multimeter (DMM). It has 11 Mohm impedence, and measures in
millivolts.
> > > (Unfortunately, based on my quick calculation, that's not enough
> > impedance
> > > to measure voltages across small objects at 60Hz. If anyone
knows of
> > > gigaohm impedence AC voltmeter for under $200 please let me
know.)
> > >
> > > Despite that, I was able to see a clear difference on the meter
between
> > > when the sheet was there or not. I could also see the effect of
> > switching
> > > the outlets on and off. I made 6 inch electrodes out of
aluminum foil to
> > > increase the capacitance. I put them 30 inches apart,
corresponding to
> > my
> > > head and the base of my spine. With the outlets on and no
conducting
> > > sheet I got about 45 mV. (Note that all these measurements are
probably
> > > way low due to inadquate impedence of the meter). With the
outlets off
> > > it dropped to 15 mV. With outlets on but the sheet under (and
insulated
> > > from the electrodes) I got 10mV, and outlets off 2mV. This was
without
> > > grounding the sheet. Grounding the sheet using the outlets
ground wire
> > > had unpredictable effects, sometimes getting down to 1mV with
the
> > > power to the outlet off, but sometimes nearly negating the
effect of the
> > > sheet. Probably a dedicated ground as my baubiologist friend
recommended
> > > is the right idea.
> > >
> > > I think grounding the is most important for addressing vertical
fields,
> > > but the horizontal ones may affect the spinal cord most.
> > >
> > > It makes sense to have the sheet go all the way to the edges of
the bed.
> > > My feet frequently hang off the end of the bed--not sure how I
can

The material is called Ex-Static and can be gotten from
lessemf.<http://lessemf.com/fabric.html#1209>
At 10^5 ohm per square it's not conductive enough to
block high frequencies--but that also means it won't act like
an antenna, I expect. It could increase fields right at the edge
of the sheet so make sure it goes as far as it can and don't
sleep right on the edge. I put it under the mattress pad (over the
mattress).
It's synthetic so maybe not comfortable for direct contact. I don't
see any danger except if the conductive sheet were to touch something
like an outlet or miswired lamp. Actually it's best if it doesn't come
too close to any live cords, but those should not be near your bed
anyway.

I'm curious if anyone has tried high conductive fabric in a bed.
Also, I could imagine putting a second sheet over the blankets,
but you really want it to go over your head, so it may not be
practical.

I meant to experiment with two layers under the sheets.
Anyone have thoughts about that? My quick calculation is that it's
not going to help: 10^5 ohm is 10^-7 sec/cm in cgs units.
Multiply by 200 cm for the size of the bed and 60 Hz and we
get 1.2 x 10^-3. I take that to mean the resistance is plenty
low for this frequency and this size bed (we physicists call this
"unit analysis"). Given that I was only seeing 3 fold or so reductions,
the reduction is probably limited by the geometry (not encasing the
electrodes with the sheet) and not the resistivity.

Bill


On 9/24/07, asurisuk <[hidden email]> wrote:

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

Hi Bill Where did you get this sheet and how much do they cost? Thanks
Taliesen

On 9/23/07, Bill Bruno <[hidden email]> wrote:

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

The fabric is called Ex-Static from lessEmf. I think it's about $5 per
foot.
I got 7 ft but I now think 7.5 or 8 ft would be better-- let it hang down a
bit
(but keep away from outlets or live cords).

There's another fabric but this one is breathable.

I left it outside to air out for a day.

Bill

On 10/10/07, Taliesen Waters <[hidden email]> wrote:

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