You might also consider how to make a test as to whether there is UV in
your environment.
I did a little research and turns out there is a little trick you can
perform.
Highlighter markers rely on UV to make them glow.
So if you use one to write on a dark or preferably black piece of cardboard,
under non-UV you can't see anything, but under UV the lettering glows.
It would be nice to know how good a test this is under real conditions.
Maybe you want to put one in your deck of cards.
Bill
Anne Lutun via Callers wrote:
When was the last time you got a tan at an *indoor* contradance?
No, this is not a joke. I got sunburned while calling this past
Saturday (March 3rd, in Pennsylvania).
How is this possible? Probably a damaged metal halide bulb in the
community center gym where the dance was held. Apparently this is a
problem that occurs sporadically in gyms all over the country, as I
found out after a google search:
https://news.vanderbilt.edu/2004/05/19/damaged-metal-halide-lamps-can-cause-indoor-sunburns-56964/
<https://news.vanderbilt.edu/2004/05/19/damaged-metal-halide-lamps-can-cause-indoor-sunburns-56964/>
https://www.fda.gov/Radiation-EmittingProducts/RadiationSafety/AlertsandNotices/ucm116540.htm
<https://www.fda.gov/Radiation-EmittingProducts/RadiationSafety/AlertsandNotices/ucm116540.htm>
I'm very fair-skinned and burn easily, but I'm not the only one who
was affected — the musicians got sunburns as well, and two of them
have (mild) eye irritation symptoms. It's only when we compared notes
yesterday that we realized what had happened.
We will all be ok, and thankfully there haven't been any reports of
dancers being affected — it was a large and lively crowd, and we kept
them moving! Other than the burns, it was an absolutely wonderful dance.
The problem had not occurred before at this monthly event because the
bank of lights that we now think the culprit bulb is a part of is not
usually on. It was needed that night because some of the other lights
had burned out.
I would like to commend the dance organizers for taking the problem
very seriously. Once informed, they immediately contacted the
community center management, who in turn promised to address the issue
right away.
I don't mean to alarm anyone, but next time you call in a gym, you may
want to wear sunscreen!
Anne Lutun
Philadelphia, PA
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