Test Equipment Anonymous

Not necessary to find and select a strobe mode. All that's necessary is to sweep the focussed beam across the eyes. Even a "startle effect" would be significant, and possibly sufficient.

ISTR being taught in school physics lessons that sparks were ~10kV/cm. Can't find that in my copy of Nelkon's textbook.

tggzzz wrote: ↑Sat Sep 05, 2026 11:03 am ISTR being taught in school physics lessons that sparks were ~10kV/cm. Can't find that in my copy of Nelkon's textbook.

I'm sure I read that in "Introduction To Atomic Physics" : S. Tolansky.

Probably a good enough rule of thumb. It must depend on all sorts of things such as humdity, atmospheric pressure, the shape of the electrodes etc.