> -----Original Message-----
> From: Howard Winter [SMTP:HDRW@H2ORG.DEMON.CO.UK]
> Sent: Tuesday, September 23, 2003 9:55 AM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      Re: [OT:] UV LED danger?
>
> Robert,
>
> On Mon, 22 Sep 2003 22:42:30 -0600, Robert Rolf wrote:
>
> > What wavelength do UV florescent tubes put out (the
> 'black light' kind, not the
> > UV EPROM erasers)? They seem to be usable for hours at
> a time without ill effect
> > (at least in disco's <G>).
>
> I think this is a dangerous assumption!  I was at a
> party a number of years ago, where one room had a "black
> light" fluorescent tube in it, and after about half an
> hour I had symptoms of "arc eye" - an irritated, sandy
> feeling in the eyes.
>
I've had arc eye from welding and you certainly know about it.  I would say
"irritated and sandy feeling" is an huge understatement, it felt like
someone was grit blasting the back of my eyeballs and I had to go to the
local eye hospital to get my eyes anesthetised in the middle of the night.
Needless to say I am somewhat more carefull when welding these days.

Mike




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