Klarinet Archive - Posting 000374.txt from 1999/09

From: "Edwin V. Lacy" <el2@-----.edu>
Subj: [kl] Re: leak light
Date: Wed, 15 Sep 1999 09:29:04 -0400

On Wed, 15 Sep 1999 LeliaLoban@-----.com wrote:

> The tool is battery-operated, a small handle (looks and works the same
> as a miniature pocket flashlight handle) attached to a flexible
> gooseneck with an optical fiber cable inside that leads to a tiny
> light bulb.

Well, possibly it does have an optic fiber cable, but I would think it
more likely that what is inside the flexible neck is just a couple of
ordinary copper wires. Fiber optic certainly would work, but that would
significantly increase the cost of the device. If it does include fiber
optic technology, I don't think it would need a lightbulb.

A leak light can easily be constructed at almost no cost. Just remove the
head from any ordinary flashlight, and attach one wire of an ordinary
electrical cord to each of the two contacts at the upper end of the
flashlight, and from there to the bulb. One wire needs to contact the
base of the bulb, and the other its side.

I seem to remember that from my 3rd grade science class project of more
than 50 years ago. Today, I guess 3rd graders are doing experiments in
nuclear physics and quantum mechanics. Hey, the world was a simpler place
in 1945!

Ed Lacy
el2@-----.edu

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