Subject: RE Computer screens (Cvijovic)(Tamm)..
Date: Tue, 1 Feb 2000 211442 -0600 (CST)
From: "Roy L. Beavers"
To: emfguru
--------------------------------------------------
.......Forwarded by EMF-L.......
Roy Beavers (EMFguru)
roy@emfguru.com
.....It is better to light a single candle than to curse the darkness.....
NEW!!! Website... http://emfguru.com
...................People are more important than profits.................
---------- Forwarded message ----------
Date: Tue, 1 Feb 2000 19:05:02 -0800
From: Allan Tamm
To: "Roy L. Beavers"
Subject: RE: Computer screens (Cvijovic)..
Dear Roy,
I don't know if the discomforts related to computer use I have experienced
are similar to those referred to by Drasko Cvijovic (he just says he
"hurts"). But in my experience a couple years ago, a notebook computer with
LCD also triggered my discomfort (temple pressure headache, jangled nerves,
and more) the same as working with a desktop computer with CRT display
system did.
Nowadays, I am able to use my "desktop" computer on a daily basis without
fear of my old symptoms by using a remote console with LCD. The computer is
connected to an analog LCD display, keyboard and mouse by 30-foot cables.
This way I can keep the computer at a safer distance from where I sit, and I
get the benefit of a low-EM radiation LCD. I also went through a period of
at least 6 months during which I drastically cut back on all computer use
before I came up with this solution. So I don't actually know whether I
would have recovered my health with this setup. I just know it works for me
now. I do feel strongly that greatly reduced EM radiation exposure for the 6
months gave my body time to do its recovery work. In order to accomplish
that, I needed the cooperation of my management at work who agreed to my
ideas about changing my work routine to spend less time in the office and
working with computers.
But why would a notebook with LCD trigger symptoms in an sensitive
individual? We know that LCDs emit very little EM radiation by comparison to
CRTs. But what about the rest of the computer? Laptops and notebooks are
generally designed to consume less power than desktop machines, and may
radiate less EMR given identical display systems (seems logical, but I'm
just guessing). Another difference is that portables don't have a power
supply built into the device - they use batteries and AC adapters. I think
(but am no expert) that this avoids a source of ELF (extremely low
frequency) radiation that is present in desktop computers. But when you use
a desktop machine you have only the keyboard directly under your fingers,
not the whole computer as is the case with a notebook or laptop computer.
And with a portable computer, you might also have the device sitting on your
lap! It seems possible that when using a notebook computer, the very close
physical proximity to the user's body could result in a higher EMR exposure
than when using a regular PC located some distance from the body
(considering just the processor box, not the display system).
This leads me to some questions. The EM radiation given off by personal
computers (say with LCD display only) must have quite a different spectrum
from the devices currently being investigated as health hazards, which
primarily are wireless communications devices. But does anyone have a feel
for whether the emission levels from CRT-less computers are in any way
comparable in strength, even if at different frequencies, to the levels
discussed as being thresholds for concern about hazards to human health?
Also, are portable laptop/notebook computers tested for compliance to FCC
guidelines for electromagnetic radiation in a way that reflects the way they
are typically used, as opposed to the way desktop systems are configured and
used?
-Allan
-----Original Message-----
From: Roy L. Beavers [mailto:rbeavers@llion.org]
Sent: Tuesday, February 01, 2000 12:25 PM
To: emfguru
Subject: Computer screens (Cvijovic)..
........Forwarded by EMF-L.......
.....It is better to light a single candle than to curse the darkness.....
NEW!!! Website... http://emfguru.com
...................People are more important than profits.................
---------- Forwarded message ----------
Date: Mon, 31 Jan 2000 21:12:28 +0100
From: "D. S. Cvijovic"
To: rbeavers@llion.org
Subject: screens
Dear Mr. Beavers,
I would appreciate if you forwarded my inquiry to the List:
I have been doing a lot of computer work lately, and found out that I need
to help myself somehow as the screen hurts me more than ever. So I borrowed
a laptop as I have been advised that LCD screens are better - there was
also a List message recently, from a satisfied LCD screen user. But I have
realized it is not harmless - maybe it hurts, say, twice less...
I would like to share information with other (Electrosensitive) people who
have some experience or knowledge about LCD screens. Also, I would be happy
to know whether anybody have tried using the video beam instead of a
screen.
With respect,
Drasko Cvijovic
pecina@cg.yu
Archive provided courtesy of WaveGuide, http://www.wave-guide.org
Reprinted with permission of Roy Beavers, http://www.emfguru.com