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Re: Ultraviolet light from brush discharge.
Terry,
I've noticed the same fluorescence of materials as you describe illuminated by
the corona spray from vac tube TC's and I've certainly stared at the discharges
long enough to have caused welder's flash symptoms but suffered absolutely no
ill effects, none whatsoever. I wear plastic lens eyeglasses however that
might attenuate the UV to a limited extent. However that said, I've given
myself a good dose of the flash with the same type glasses on while looking
upon a mercury vapor lamp with the outer UV shielding/wavelength conversion
envelope removed during an experiment for just 15 seconds or so about 15 years
ago. I guess the UV from the TC, although invisible is long wave UV and
therefore quite harmless. After all it is the electricity that is making the
ozone, not the UV. In the case of my Hg lamp experiment the ozone from the
'light' was quite strong.
Robert W. Stephens
Director
AREA31 Research Facility
<http://www.area31-dot-org>www.area31-dot-org
>
> ----- Original Message -----
> From: <mailto:tesla-at-pupman-dot-com>Tesla List
> To: <mailto:tesla-at-pupman-dot-com>tesla-at-pupman-dot-com
> Sent: Sunday, March 12, 2000 20:40
> Subject: Ultraviolet light from brush discharge.
>
> Original Poster: Terry Fritz
<<mailto:twftesla-at-uswest-dot-net>twftesla-at-uswest-dot-net>
>
> Hi All,
>
> While running my CW coil in very low light, I noticed that paper and a few
> light colored cloths fluoresce as if under black light. It was not real
> intense but I was wondering if it is maybe not a good idea to stare at the
> discharge for lengths of time. I don't see the discharged "burned" into my
> retina if I close my eyes or anything, but I thought I would ask.
>
> Cheers,
>
> Terry