Original poster: Finn Hammer <f-h@xxxx> Tesla list wrote:
Original poster: Ed Phillips <evp@xxxxxxxxxxx> Neat work! What are the details of the induction coil?
Ed,I don`t have much information on it, it was supplied by the museum, I shined it up and put my name on it. 22 pie shaped coils in series, about 8 inches long and 3 inches in diametre. Driven by a light dimmer and a cap. I suddenly realize I`ve forgotten most details of it, and I don`t keep records that I could promise to check.
heers, Finn Hammer
As for observing the tiny sparks I seem to remember that he was pretty much in total darkness to see that. I've built similar but much cruder apparatus working at a wavelength of about a meter but I cheated and used a neon tube as the detector. The setup consisted of a pair of rods with spherical spark gap at the center but no end loading and with it and the neon tube detector it was easy to demonstrate interference effects and reflections.Ed