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re: Interesting bit of info on spark gaps and UV



Bert Poole wrote:
>"Prof. Zickler, of Brunn, has shown that a telegraphic instrument can 
>be actuated at considerable distances by ultraviolet light. He 
>employs a powerful arc lamp as his transmitter, using a screen of 
>glass, to produce flashes of the ultraviolet  beam. The receiver is 
>regulated to just below the sparking point. He was able to produce an 
>effect at 200 meters. It is extremely interesting to physicists to 
>learn that the easily absorbed ultraviolet light can influence a 
>spark discharge at so great a distance."

Sounds interesting - how about a small sync motor with a disk on the 
shaft.  A hole in the disk allows UV from a carbon arc to pass through 
the disk at the appropriate instant fall onto the gap element!  That 
would be easy to build! (and it might even work)

-Bill



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