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From: pc@hplabsb.UUCP (Patricia Collins)
Newsgroups: net.followup,net.misc,net.kids,net.bio
Subject: Re: X-rays from CRTs and Monitors - Info Wanted
Message-ID: <2279@hplabsb.UUCP>
Date: Tue, 22-May-84 14:14:21 EDT
Article-I.D.: hplabsb.2279
Posted: Tue May 22 14:14:21 1984
Date-Received: Sat, 26-May-84 12:07:22 EDT
References: <345@astrovax.UUCP>
Organization: Hewlett Packard Labs, Palo Alto CA
Lines: 40


	On a recent National Public Radio show, a scientist spoke
	on the radiation hazards of CRTs.  The radiation level from
	a PROPERLY ADJUSTED CRT is 2 orders of magnitude LOWER than
	the radiation from another human being (due to naturally
	occurring radiation from chemicals within human bodies).
	That, in turn was a couple of orders of magnitude lower than
	the amount of radiation received by the average person (per
	year) from the sun.

	Similar measurements should be available on X-ray dosages.

	My opinion is that the biggest hazard from sitting in front of
	a CRT/monitor all day is not from EMR (etc.).  I would be
	most concerned about the inactivity.  Our bodies need motion,
	exercise, and change to function optimally.  Although, it is
	possible to improve "productivity" at a CRT by putting in
	uninterrupted hours of concentrated thought/programming/data entry,
	our minds also benefit from short breaks.  (Refer to your
	Psych 101 text for details.)


	For further info:

	"Health Protection for Operators of VDTs/CRTs, NYCOSH, 32 Union Sq.,
	Rm. 404, NYC, NY  10003  ($1)

	G.W. Wolfe, "Ionizing Radiation and VDTs,"  Kilobaud Microcomputer,
	July 1981

	W.E. Murray, et al, "A Radiation and Industrial Hygiene Survey of
	Video Display Terminal Operations, Aug. 1981

	R.C. Peterson, et al. "Nonionizing Electromagnetic Radiation 
	Association with Video-Display Terminals"

					Patricia Collins
					hplabs