- Jan 1, 1970
John said:Easier, and more dramatic, might be a spark gap. I think the first
cloud bounce work was done with spark gaps and PMTs.
A spark gap can produce a not-many-ns high-power light blip, small
enough to focus pretty well, parabola or big honking fresnel lens
maybe. That might appeal to a kid. Hey, make your own capacitor!
That's not a bad idea. Of course, a laser-induced air ionization spark
would be fun too!
Some folks are using laser sparks for broadband fast optical sources.
But I am having fun these days employing power LEDs to displace some Xe
arc lamps for Schlieren imaging light sources.