From: dionf@ere.umontreal.ca (Dion Francois)
Subject: Re: TECH: Radiation
Date: Sat, 11 Apr 1992 16:04:20 GMT
Organization: Universite de Montreal


In article <1992Apr11.030626.2729@u.washington.edu> rmg53668@uxa.cso.uiuc.edu (Ryan M. Grant) writes:
>>Don`t know that. I don`t think that it`s very dangerous to use them
>>in the normal way. But if you try to build up you own VR helmet (with
>>CRTs) you will obviously spend a lot of time before the CRTs. And
>>then I suppose it can be very dangerous. Because if it is bad for 
>>you than the more it will be bad how longer you use the CRTs.
>
>Gotta throw in a concerned "Yah" here.  Nobody holds their Watchmans two inces
>from their face for hours on end.  "Normal use" has to effect the danger
>ratings, and this doesnt appear to be normal use of a Watchman CRT.  Of course
>this does not mean modified use has to be dangerous.
>
>                        - Ryan Grant

I checked yesterday (friday) the professionnal cameras that we have at
U de Montreal and they have fairly big TUBE viewfinders in COLOR. Some people
use this up to 3 hours a DAY. Some cameras are more than 10 years old. So,
i repeat: How come they have not been pulled out if the radiations are that
dangerous? Also, some of you are using 17" and 21" COLOR monitors at a distance
of 2 feets. The radiation is probably equal or even more than what Dave Stampe
is using: a small tube B&W.

And for those who dont want tubes: Citizen LCD monitors or there is also a
flexible plasma screen very light made in Sweden. Bytewide marketing was going
to import them, but at the end they would have sold them at around 2000$ each
because they couldn't get a good distribution price. They dropped the idea.
I know that somebody has imported them because last year i saw a screen like
that at Lavalin Inc ( now it has merged and the new group is called BNC/Lavalin)

Or maybe with a lot of leds and optic fibers? 8)

Ciao,

	Francois Dion
	    '