Re: 3D Caves

[P3D David W. Kesner <drdave@xxxxxxxxxx>]

In photo-3D Gregory J. Wageman states:

<Speaking of which, something I've been wondering about:
<There was recently a discussion by people who had been zapped
(painful
<shocks, burns, etc.) by their cheap camera flashes which developed
electrical
<problems. I've heard of this before, and get the impression that
it's not
<necessarily a rare occurrence - perhaps as many as one out of every
several
<hundred longtime users of cheap flashes has been zapped at least
once.
<But none of the posters claim to have been actually killed by this,
and I'm
<not too worried about the low-power flashes.

On a related subject: you can "fire" a flash bulb just by having it
close to another bulb that is being fired. This technique is
sometimes used to provide a very large flash to light up a big room.
You take a pie tin and punch a hole in the center through which you
stick a flash bulb. You then wire this bulb to a trigger device. You
fill the pie tin with loose bulbs. When the one bulb is fired it
triggers the other bulbs and you get one big flash. Anyway, there are
several stories of people carrying spare loose bulbs in their pants
pocket and getting too close to a triggered bulb. I think you can
guess the result. Fired bulbs get very, very hot. It can make for a
very humorous moment, providing you are the watcher and not the
subject.

Thanks for the time,

David W. Kesner
Boise, Idaho, USA
drdave@xxxxxxxxxx
(No I'm not a doctor - just a nickname)


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