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Re: UV Detection methods was Ultraviolet light from brush discharge.



On 16 Mar 00, at 6:44, Tesla List wrote:

> Original Poster: "Troy Peterson" <highvoltage-at-mad.scientist-dot-com> 
> 
> Hi all,
> Probably a little off topic, but I just have to throw in my observations
> 
> >     I know many of us here are all concerneed about UV rays and damage
> > towards our eyes.  Sarah Thompson stated something called "fairy Liquid".
> If
> > i've got the right idea, you can take this stuff under a uv light and it
> will
> > glow(like glow in the dark paint.) I was wondering if it's possible to use
> 
> I was testing my coil using a static gap in a peice of PVC pipe (sorta like
> an RQ gap), I had the gap just sitting on the carpet sideways (yeah, I know,
> BIG fire hazzard) with an ac fan blowing through the gap away from me. I was
> just running the coil for short runs in the dark when I noticed that the arc
> from the gap hardly lit up the room, except for white papers on the wall,
> which glew (is that a word) bright purple - that is to be expected, but the
> odd thing was, that after I turned off the coil there was a glowing violet
> plume on the carpet in the direction that the fan was blowing (through the
> back of the gap, like a jet engine exhaust). It was like there was
> glow-in-the-dark material in the carpet, and it lasted clearly vissible for
> at least 5 secconds before fading away. Has anyone ever heard of unlikly
> materials aquiring(storing) UV energy like this and slowly releasing
> it? -thought it was weird anyway.

Yes - button switches on lamps are designed to store and release 
energy in this fashion although they are designed specifically to 
work on visible light.

Regards,
Malcolm