Re: Buying a monitor

Article View: uk.comp.os.win95

Article #237

#237

From: Michael Salem
Date: Sun, 07 Apr 2002 00:59

24 lines
2237 bytes

Re monitors and radiation:

A CRT colour monitor is a device in which an electron beam generated 
by a potential difference of around 25000V (25kV) hits a target and 
knocks photons off it. The target is optimised to produce photons in 
the visible spectrum.

An X-ray machine is a device in which an electron beam generated 
by a potential difference of over 25000V (25kV) hits a target and 
knocks photons off it in the X-ray (high-energy) spectrum.

A bit oversimplified, but there's not a lot of difference. Electrons 
that hit the wrong target, and a voltage which exceeds the specified 
value (I've known a particular model which went 67% over specified 
voltage in case of a cheap capacitor going high-resistance) make a 
(rather inefficient) X-ray machine.

Voltages in LCD monitors are orders of magnitude below 25kV, and 
utterly incapable og generating a measurable amount of high-energy 
photons.

HT Reassures,
-- 
Michael Salem

Technical Details

Message-ID: <20020407.0059.27337snz@michaels.demon.co.uk>

Path:

arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!dispose.news.demon.net!news.demon.co.uk!demon!mail2news.demon.co.uk!not-for-mail

References:

<iFNqp6HdTvY8Ewcx@pigsonthewing.org.uk> <3c64e25b.1311955@news.freeserve.net> <3kzP3ZIslPp8EwVn@soft255.demon.co.uk> <3ca9d811.1727036@news.freeserve.net> <VtGn$CAXvqq8EwYM@ch-w.demon.co.uk> <3cac7a63.1285057@news.freeserve.net> <poauau4aq6v6ljs9f1lvrfrbu61s5s9np6@4ax.com>

Show Full Headers

Complete Article Headers

X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 1025cc,527906d56d6f1ea2
X-Google-Attributes: gid1025cc,public
X-Google-Thread: 1036bc,527906d56d6f1ea2
X-Google-Attributes: gid1036bc,public
X-Google-ArrivalTime: 2002-04-07 00:50:04 PST
Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!dispose.news.demon.net!news.demon.co.uk!demon!mail2news.demon.co.uk!not-for-mail
From: 4ms2u$ms@michaels.demon.co.uk (Michael Salem)
Newsgroups: uk.comp.os.win95,demon.tech.pc
Subject: Re: Buying a monitor
Date: Sun, 07 Apr 2002 01:59:00 +0100 (BST)
Organization: MSC
Message-ID: <20020407.0059.27337snz@michaels.demon.co.uk>
References: <iFNqp6HdTvY8Ewcx@pigsonthewing.org.uk>
 <3c64e25b.1311955@news.freeserve.net>
 <3kzP3ZIslPp8EwVn@soft255.demon.co.uk>
 <3ca9d811.1727036@news.freeserve.net>
 <VtGn$CAXvqq8EwYM@ch-w.demon.co.uk>
 <3cac7a63.1285057@news.freeserve.net>
 <poauau4aq6v6ljs9f1lvrfrbu61s5s9np6@4ax.com>
Reply-To: news@michaels.demon.co.uk
X-Trace: mail2news.demon.co.uk 1018169359 mail2news:15505 mail2news mail2news.demon.co.uk
X-Complaints-To: abuse@demon.net
X-Mail2News-Path: news.demon.net!michaels.demon.co.uk
X-Newsreader: SNews 1.31+mods(jlw010104/386)
Lines: 25

Reply to Parent Message