Thread View: mod.computers.workstations
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Started by Werner Uhrig
Sun, 23 Feb 1986 07:22
pointer: health hazards from VDTs/CRTs
Author: Werner Uhrig
Date: Sun, 23 Feb 1986 07:22
Date: Sun, 23 Feb 1986 07:22
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[ from SCIENCE-86, March 86, Current News HIGHLIGHTS, page 10 ] Eyestrain, headaches, and other ill effects of working at a video display terminal aren't eased by changing either the office lighting or the color of the characters. So say researchers at the University of California, Berkeley, who studied 35 people as they worked at VDTs with white, green, or amber characters in rooms with incandescent or fluorescent light. A likelier cause of strain, they found, was sitting too close to the screen or making it too bright. [ no source or reference given, unfortunately, because I don't believe it and suspect that "the press" may be misunderstanding or falsely condensing what the researchers, whoever they may be, studied and concluded. In any case, from personal experience I dispute that office lighting and color of display is not significant. Ill-effects? 35 cases? hmmp - Werner ]
Re: pointer: health hazards from VDTs/CRTs
Author: Lord Kahless
Date: Wed, 26 Feb 1986 04:45
Date: Wed, 26 Feb 1986 04:45
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We've consistently found that
1) Green monitors are harder on your eyes under fluorescent
light.
2) Amber monitors seem to be the easiest to work with.
3) CHEAP green screen terminals whose color temperature is
right around that of the fluorescent lights leave me and one
of my coworkers literally sick after a work day. (Headache,
nausea, etc.) In contrast, the same make and model of
terminal with an amber monitor is o.k.
4) GOOD green monitors are better than equivelent quality
blue monitors. I am specifically thinking of my experiences
with DEC Rainbow micros and 220 terminals.
5) Fluorescent lights in general are a pain. Here is one
story: Wyse 75 terminals have this nausea colored green
monitor. I've used twin terminals at two sites, one under
institutional fluorescent, one under house incandescent
lights with some natural light. Under fluorescent lights, my
eyes gave out. Under natural light, I find the terminal
fine.
6) Color terminals, even when set to green, amber, whatever,
tend to be harder on the eyes. (Lower resolution, etc.)
7) Flickering reverse video drives me nuts. Wyse 75 magic
cookie specials are the worst.
I have also noticed that people tend to turn up terminals way
too bright, and that they tend to use them in rooms which are
at the brightness level for reading, which is way too bright
for CRT work.
Interestingly enough, people who are used to cheapo micros
get used to the green monitors better than those of us who
have finer tastes. I know of some Apple ][ people who PREFER
the terminal which makes the people who work with me
literally throw up.
{dual,lll-crg,ucbvax}!ucdavis!vega!ccrdave
+-----------------------------------------------------------+
| "I've seen things you people wouldn't believe. |
| Attack ships on fire off the shoulder of Orion. I watched |
| C-Beams glitter in the dark near the Tannhauser Gate. All |
| those moments will be lost in time, like tears in rain. |
| Time to die." -- Roy Baty, Nexus6, N6MAA10816, Combat |
+-----------------------------------------------------------+
Re: pointer: health hazards from VDTs/CRTs
Author: Matt Perez
Date: Sun, 02 Mar 1986 00:53
Date: Sun, 02 Mar 1986 00:53
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As I understand it, CMU tried to get IBM to agree to general distribution of Andrew, but CMU `lost'. I agree with you, and IBM has probably lost as well on an opportunity to make Andrew a dominant force.
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