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Salvador Freemanson
Guest
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 Posted: Mon May 28, 2007 9:50 am Post subject: Wifi power levels dangerous ? |
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Hello,
There's been some publicity about the danger of wifi signals recently.
Personally, I think it's scaremongering, as wifi power levels are a tiny
fraction of that coming from e.g GSM masts.
On the other hand, power levels decrease on an inverse square law to the
distance.
The problem is, I use my laptop truly as a LAPtop. I lie back on the
couch and the laptop is wedged between my stomach and my knees. Now, the
wifi signal generator is very close, just a couple of centimetres, from
sensitive parts of my body.
Just how dangerous is this? |
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mike
Guest
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| Posted: Mon May 28, 2007 9:50 am Post subject: Re: Wifi power levels dangerous ? |
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Salvador Freemanson wrote:
| Quote: | Hello,
There's been some publicity about the danger of wifi signals recently.
Personally, I think it's scaremongering, as wifi power levels are a tiny
fraction of that coming from e.g GSM masts.
On the other hand, power levels decrease on an inverse square law to the
distance.
The problem is, I use my laptop truly as a LAPtop. I lie back on the
couch and the laptop is wedged
|
Wedged? That's an image I'm wishing I hadn't seen ;-)
between my stomach and my knees. Now, the
| Quote: | wifi signal generator is very close, just a couple of centimetres, from
sensitive parts of my body.
Resonant parts absorb more energy than not. How long is your sensitive |
part relative to the wavelength of the RF? If you get cancer there,
they can just lop it off. Problem solved.
Tinfoil shorts?
| Quote: |
Just how dangerous is this?
|
But seriously, Your government wouldn't let them harm you...would they???
My powerbook has the antenna in the base unit. The PC laptop has it in
the display where that inverse square law can do its magic.
Depending on how near-sighted you are, you might be better off worrying
about your eyes.
And if you have a cellphone stuck to your ear 24/7, I'd worry a lot more
about that. That's where the thinking happens...unless you're
downloading ***...my mom was very forward thinking when she said
I'd go blind...
;-)
mike
--
Return address is VALID!
Bunch-O-Stuff Forsale Here:
http://mike.liveline.de/sale.html |
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Val
Guest
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| Posted: Mon May 28, 2007 10:52 pm Post subject: Re: Wifi power levels dangerous ? |
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"BillW50" <BillW50@aol.kom> wrote in message
news:465aff1a$0$18537$834e42db@reader.greatnowhere.com...
| Quote: |
Now here is the bad news. Every cop I known who had done this (about 5 of
them) ended up with cancer decades later. Either prostate, colon, or
rectum cancer.
--
Bill
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That's not from the radar, it's from the donuts.
:)
Val |
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PJ
Guest
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| Posted: Mon May 28, 2007 10:53 pm Post subject: Re: Wifi power levels dangerous ? |
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Salvador Freemanson wrote:
| Quote: | Hello,
There's been some publicity about the danger of wifi signals recently.
Personally, I think it's scaremongering, as wifi power levels are a tiny
fraction of that coming from e.g GSM masts.
On the other hand, power levels decrease on an inverse square law to the
distance.
The problem is, I use my laptop truly as a LAPtop. I lie back on the
couch and the laptop is wedged between my stomach and my knees. Now, the
wifi signal generator is very close, just a couple of centimetres, from
sensitive parts of my body.
Just how dangerous is this?
|
Mostly speculation so, everyone can play. I'd propose a greater hazard
for males than for females. We have more critical cell divisions per
minute than do females.
Back in the '30s (before we 'learned it all') a bunch of young interns
discovered short term sterility from an X-Ray zap. Years later,
miscarriages, birth defects and Leydig cell tumors.
Since 802.11 has some freq. agility through spread spectrum, I'd think
it isn't constantly exciting the same tissue structures. The risk is
probably a fraction of that from a GSM fone, or a radar gun. Worse, you
could shove a GSM /Broadband Connect/ card in that LAPtop.
Aside from the tinfoil shorts, doing a hula or rumba motion might help
distribute the exposure. For broadband, try a CDMA card from Sprint or
Verizon.
--
pj |
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Salvador Freemanson
Guest
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| Posted: Mon May 28, 2007 10:53 pm Post subject: Re: Wifi power levels dangerous ? |
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Val wrote:
| Quote: | "BillW50" <BillW50@aol.kom> wrote in message
news:465aff1a$0$18537$834e42db@reader.greatnowhere.com...
Now here is the bad news. Every cop I known who had done this (about 5 of
them) ended up with cancer decades later. Either prostate, colon, or
rectum cancer.
--
Bill
That's not from the radar, it's from the donuts.
:)
Val
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Where do you have to put doughnuts to get these cancers? |
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M.I.5¾
Guest
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| Posted: Tue May 29, 2007 11:03 am Post subject: Re: Wifi power levels dangerous ? |
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"BillW50" <BillW50@aol.kom> wrote in message
news:465aff1a$0$18537$834e42db@reader.greatnowhere.com...
| Quote: | "Salvador Freemanson" <spam@gohome.com> wrote in message
news:465a7148$0$2308$426a74cc@news.free.fr
Hello,
There's been some publicity about the danger of wifi signals recently.
Personally, I think it's scaremongering, as wifi power levels are a
tiny fraction of that coming from e.g GSM masts.
On the other hand, power levels decrease on an inverse square law to
the distance.
The problem is, I use my laptop truly as a LAPtop. I lie back on the
couch and the laptop is wedged between my stomach and my knees. Now,
the wifi signal generator is very close, just a couple of
centimetres, from sensitive parts of my body.
Just how dangerous is this?
Well years ago, I have known some cops place the radar gun between their
legs from time to time. They knew this would make one sterile for a day or
so. The power output if I recall correctly was very low. Like 400mw, the
same as high powered WiFi.
Now here is the bad news. Every cop I known who had done this (about 5 of
them) ended up with cancer decades later. Either prostate, colon, or
rectum cancer.
|
Ever considered a career in journalism?
There is an enormous difference between the type of signals. The radar gun
uses microwaves in the centimetric bands (typically 1-3 cm). WiFi does not
use microwaves, but operates in the upper part of the UHF bands*. It is not
as powerful as as 400 mW either, there is an absolute upper limit of 100 mW,
most WiFi devices being much less than that. Lastly, the radar gun directs
all of its power in one small cone of radiation. WiFi radiates
isotropically, so the received energy is vastly lower.
*Oddly, domestic (and many commercial) microwave ovens don't actually use
microwaves either. They operate in the same UHF 2.4 GHz band as WiFi,
bluetooth, cordless phones and baby monitors. They get called 'microwave'
ovens because the method of generating the RF energy was invented as a
microwave device. |
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Salvador Freemanson
Guest
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| Posted: Tue May 29, 2007 11:03 am Post subject: Re: Wifi power levels dangerous ? |
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M.I.5¾ wrote:
| Quote: | "Salvador Freemanson" <spam@gohome.com> wrote in message
news:465a7148$0$2308$426a74cc@news.free.fr...
Hello,
There's been some publicity about the danger of wifi signals recently.
Personally, I think it's scaremongering, as wifi power levels are a tiny
fraction of that coming from e.g GSM masts.
This is just plain scaremongering.
The WiFi power output levels are vastly lower than those from GSM mobile
phones. Once this is pointed out, the next line of attack is to claim that
the power level when you have 50 or so WiFi terminals in one place (such as
a school), multiplies that power level dramatically. This overlooks the
fact that if more than one WiFi terminal was transmitting at the same time,
no communication would actually occur.
Only one WiFi terminal on any single network transmits at any one time.
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Agreed. But what about the proximity issue? The fact that you only get a
tiny proportion of the power from a GSM mast, being a long distance away
, whereas you can be a fraction of an inch from the wifi source. |
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M.I.5¾
Guest
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| Posted: Tue May 29, 2007 11:03 am Post subject: Re: Wifi power levels dangerous ? |
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"Salvador Freemanson" <spam@gohome.com> wrote in message
news:465bd6d3$0$24177$426a34cc@news.free.fr...
| Quote: | M.I.5¾ wrote:
"Salvador Freemanson" <spam@gohome.com> wrote in message
news:465a7148$0$2308$426a74cc@news.free.fr...
Hello,
There's been some publicity about the danger of wifi signals recently.
Personally, I think it's scaremongering, as wifi power levels are a tiny
fraction of that coming from e.g GSM masts.
This is just plain scaremongering.
The WiFi power output levels are vastly lower than those from GSM mobile
phones. Once this is pointed out, the next line of attack is to claim
that the power level when you have 50 or so WiFi terminals in one place
(such as a school), multiplies that power level dramatically. This
overlooks the fact that if more than one WiFi terminal was transmitting
at the same time, no communication would actually occur.
Only one WiFi terminal on any single network transmits at any one time.
Agreed. But what about the proximity issue? The fact that you only get a
tiny proportion of the power from a GSM mast, being a long distance away ,
whereas you can be a fraction of an inch from the wifi source.
|
Of more worry is the power transmitted by a GSM phone. This can be up to 2
watts peak (though is a 16:1 duty cycle pulse). You can be a fraction of
an inch from a GSM phone.
WiFi terminals are isotropic radiators radiating at less than 100 mW (and
again it's not continuous). The issue is therefore completely insignificant
compared to GSM phones. |
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B. Wright
Guest
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| Posted: Sun Jun 03, 2007 6:50 am Post subject: Re: Wifi power levels dangerous ? |
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BillW50 <BillW50@aol.kom> wrote:
| Quote: | Well years ago, I have known some cops place the radar gun between their
legs from time to time. They knew this would make one sterile for a day
or so. The power output if I recall correctly was very low. Like 400mw,
the same as high powered WiFi.
Now here is the bad news. Every cop I known who had done this (about 5
of them) ended up with cancer decades later. Either prostate, colon, or
rectum cancer.
|
Some might not consider that bad news, just karma coming back from
running speed radar traps and handing out frivolous tickets to generate
revenue for the municipality. ;)
As someone else pointed it, out was probably all the fast food and
donuts that contributed more. |
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