🚀 go-pugleaf

In article <15525@dartvax.Dartmouth.EDU| earleh@eleazar.dartmouth.edu (Earle R. Horton) writes:
|In article <11557@boulder.Colorado.EDU| pratt@boulder.Colorado.EDU
|	(Jonathan Pratt) writes:
||In article <1589@draken.nada.kth.se| h+@nada.kth.se (Jon W{tte) writes:
|||
|||You ARE aware that recent research indicates that it's the UV from CRTs
|||that hurt the eyes the most (can cause blindness, and a disease that I
||
||I was under the impression that most glass is opaque to UV.  Is there any
||reason the glass used in CRTs wouldn't have this property?
|
|No, but the situation is more complicated than that.  It is true that
|glass has an absorption band in the ultraviolet, and that therefore

BTW, most ALL plastics are pretty much opaque to UV, at least the shorter UV
wavelenghts.  I'm not sure where the cutoff it, but it's FAR away from where
the ~250nM mercury line is.

Back in an earlier life, when I did semiconductor processing, I found that
a layer of polyimide about 1 micron thick was essentially opaque to that
250nM short-wave UV light, enough that EPROMS could not be erased through it.
-- 
Rich Straka     att!ihlpf!straka

MSDOS: All the wonderfully arcane syntax of UNIX(R), but without the power.