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From: jones@sj.ate.slb.com (Clark Jones)
Newsgroups: comp.sys.mac.misc,sci.energy,sci.electronics,sci.environment,ieee.net.tech,ieee.general
Subject: Re: VDT Electric Fields
Message-ID: <1991Feb13.002236.8087@sj.ate.slb.com>
Date: 13 Feb 91 00:22:36 GMT
References: <12438@pucc.Princeton.EDU>
Reply-To: jones@sjs.sj.ate.slb.com (Clark Jones)
Followup-To: sci.energy
Organization: Schlumberger ATE, Tempe, AZ
Lines: 23

In article <12438@pucc.Princeton.EDU> STENGEL@pucc.Princeton.EDU writes:
[stuff deleted]
>   In the popular reporting on the subject, much has been made of average
>field strengths and possible repercussions on health, but little or no
>attention has been paid to peak transient fields, which could be expected to
>have increased effect.  It may well be that the VDT presents a greater
>hazard as it is being turned on than while it is operating normally.
>Increased understanding of this potentially significant factor is warranted.

And the designers of this equipment, in their infinite wisDUMB, put the
on/off switches on the _BACK_ so you've got to get "up close and personal"
to turn the thing on or off!

BTW, you didn't mention whether the VDT in question is a monochrome or
color.  For many years, standard design of color CRT circuits has included
a "de-gausser", which applies a decaying line-frequency magnetic field to
the tube to eliminate residual magnetic fields (which would interfere with
the image displayed).  This is applied to the face end of the tube.

						Clark

Disclaimer:  The opinions expressed above are mine and not those of
Schlumberger because they are NOT covered by the patent agreement!