On Sun, 6 Apr 2008 12:04:56 +1000, "Phil Allison"
wrote:
The metal CRT shadow mask is fairly impervious to x-rays.
** Nonsense - the x-ray attenuation factor of thin Fe-Ni alloy is small.
The x-rays are produced by the electron beam hitting the metal. One
characteristic of metals is that they have loosely bound outer
electrons. That's why metals conduct electricity. Hit the metal atom
hard enough, and one of the electrons in the inner shell gets knocked
out. The outer electron falls inward to replace the displaced
electron, emitting x-rays in the process.
What
electrons go through the holes in the shadow mask to light up the
phosphor dots, do not produce x-rays.
** Wiki disagrees.
You got a cite for that ?
Got a reference page from whatever Wiki you were reading that says
phosphors emit x-rays when pounded on by electrons?
I don't do any extra work for anyone spewing vague denunciations
without substantiation. If you claim your "Wiki" reference is more
accurate than mine, kindly supply the URL and applicable quotes.
This article has a fairly simple explanation of x-ray production from
a Scientific American article:
http://www.noah.org/science/x-ray/stong/
I have the original article somewhere in my pile of books.
See appendix B at:
http://www.eiae.org/chemicals/files/EIA_CRT_5-01.pdf
** You must be desperate to use survey crapology as evidence.
True. I picked the first reference that someone of your limited
intelligence can understand. Got anything better or more recent?
** Irrelevant to the point - fool.
I do have one simple question. Why do you feel it necessary to add
insults to your comments? It doesn't add anything of value and
certainly doesn't improve your credibility.
When I was young (and stupid),
** When ???
Late 1960's. I was working in a hi-fi and TV repair shop. A few
weeks after I plasted the CRT with Polaroid film, one of the techs
nearly died when he grabbed the anode lead of a similar TV. Digging
around the guts of an old TV without first discharging the tube is a
really bad idea.
It ain't changed.
For you, nothing ever does.
..... Phil
--
Jeff Liebermann
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