[Prev][Next][Index][Thread]

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

Phosphorescence can occur at virtually any wavelength with variable time 
constants depending on the phosphor. I am not certain that this was the
effect that you witnessed, but it is certainly a candidate. Detergents
commonly contain phosphate compounds and many of these fluoresce and even
phosphoresce. It could be a residual from carpet cleaning.

> 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.
>