Playing With UV LEDs
joseph at kirtland.com
Thu Jun 5 23:52:30 CDT 2008
Been having some fun with some UV LEDs bought at Dayton.
I've had a collection of uranium glass marbles for ages, and have
never had a black light to see their brilliant green glow as they
fluoresce under UV light. I modified a 14 LED torch with UV LEDs.
Now I just need to be aware of the precautions of UV, which
surprisingly apply to the LEDs.
Take a look at this quick little gallery. You can see a bunch of 1
inch "shooter" marbles under normal light and under the UV torch.
There is also a photo of about 50 small marbles in a jar with a
humorous "RADIOACTIVE" sticker.
See: http://gallery.mac.com/jwbento and click on "UV TORCH"
Now I just need to pick up a geiger counter. The radiation from these
marbles is low enough to be harmless, though apparently they will
register on a counter.
Pleasant Grove, UT
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