CRT implosions

Sridhar Ayengar ploopster at
Wed Oct 5 08:55:23 CDT 2005

Paul Koning wrote:
>>>>>>"Vintage" == Vintage Computer Festival <vcf at> writes:
>  Vintage> Yep.  There's 6-8 pounds of lead in a CRT, with the majority
>  Vintage> of it (90%+) being in the face, which is also by far the
>  Vintage> thickest part.  This is to protect viewers against the X-ray
>  Vintage> emissions.  I imagine it also contributes to the structural
>  Vintage> strength of the tube.
> I don't know about that.  Leaded glass has assorted nice properties
> (high refractive index and high dispersion are two that explain why it
> has been used for centuries in fancy glassware, and also in optical
> devices) but I don't think that higher strenght is one of them.

Just hold a glass cup of a particular size and construction, and a 
leaded glass cup of the same size and construction and you will see how 
much stronger the leaded glass is.  It's quite noticeable even to the 

Peace...  Sridhar

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