[ale] OT: 802.11b radiation? (was: Wireless Design Suggestions)

[James P. Kinney III]

So how do you feel this morning? Any new hair growth (or loss), tingling
in extremities?  :)

That was pretty much what I was expecting. Another interesting test is
to put a steam source or a water balloon between the AP and the client
and measure the attenuation. That would verify the interaction with
water. As the human skeletal system is composed of an organometallic
matrix of calcium, that can account for some attenuation in the same way
a sheet of aluminum foil can attenuate a radio signal. 

A water balloon with a small amount of salt in it (for conductivity) and
a thin metal wire in the water connected to a common ground would
probably block the signal completely. A fish tank would work as well.

On Thu, 2003-01-02 at 10:18, Michael D. Hirsch wrote:
> On Monday 30 December 2002 09:04 pm, James P. Kinney III wrote:
> > I'm not sure. The standards for "absorbed radiation" are incredibly
> > difficult to write and interpret. Ballpark, I would put 802.11b at a bit
> > higher power output than cell phones. This only due to the wider
> > bandwidth (not data bandwidth, but actual MHz) than cell phones. The
> > principle concern is the frequency. It is in the range that water
> > absorbs microwaves from. Since the human body is predominately water, it
> > stands to reason that a human can attenuate an 802.11b signal.
> 
> I can verify that.  last night I was playing with my wireless card in my 
> Zaurus.  I was watching a wireless monitor which reported signal strength.  
> I got significant attenuation when my body was between the Zaurus and the 
> access point.
> 
> --Michael
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James P. Kinney III   \Changing the mobile computing world/
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GPG ID: 829C6CA7 James P. Kinney III (M.S. Physics) <jkinney at localnetsolutions.com>
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