"Jeff Liebermann"
"Phil Allison"

Most of the x-rays emitted by CRT's come out the BACK of the tube, not
the front. The shadow mask blocks most of them.

X-rays are generated at the point where maximum electron deceleration
occurs - ie as the moment they

1. Hit the colour phosphors.

2. Are intercepted and absorbed by the shadow mask while on the way
there.

( delete drivel)


In case 1, x-rays travelling towards the viewer are absorbed only by the
face glass.

The metal CRT shadow mask is fairly impervious to x-rays.


** Nonsense - the x-ray attenuation factor of thin Fe-Ni alloy is small.



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 ?



In case 2, x-rays are generated on the reverse side of the shadow mask
and then travel both forward and backwards. Those travelling forwards
are absorbed by the face glass.

Most travel backwards (reflected) which is why the funnel of the CRT
has much more lead in it than the screen.


** Maybe so, but the face glass is way thicker.


The face glass is many times thicker than the rest of a CRT's glass - so
it
contains most of the of lead.

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.


The shadow mask itself is made from very thin alloys sheet ( " invar " or
nickel-iron) so will not absorb x-rays to any great extent.

The shadow mask is made from Invar for mechanical stability.


** Irrelevant to the point - fool.


When I was young (and stupid),


** When ???

It ain't changed.



...... Phil