4 Oct
2005
4 Oct
'05
2:21 p.m.
Interestingly,
that info implies that it's the steel strap around the
perimeter of the CRT's face which does the implosion protection, and
That strip, normally called the rimband over here, is certainly for
implosion protection in some CRTs. But I suspect the double faceplate is
part of the implosion protection too. bit at a time.
Given the huge thickness of the CRT face* I would be
surprised if heated wire could cause it to break (the faceplate's
Actually, one of the easiest ways to get stresses in glass is from uneven
heating/cooling (but I suspect the wire you used didn't get the glass
itself anything like hot enough for this to be a problem). Work out the force on the faceplate due to air
pressure (which you can
assume is 14 pounds per square inch). It's pretty large for TV-sized CRTs!
Several tonnes even on little ones 14"-20", even MORE on 36" CRT.
The largest CRT that was is hitachi 40" TV.
Cheers, Wizard
-tony