Reply #24: There would have been no arcing.

[kentauros]

Tesla worked with very high and very low frequencies of electricity. The low frequencies would allow for propagating the electricity over the surface of the earth while the high frequencies had to do with determining a means of transmitting electricity wirelessly through a very low-pressure space, like in the upper atmostphere.

This site explains all that better in the opening statements, though I haven't read the whole page:
http://www.geocities.com/Area51/Shadowlands/9654/tesla/projecttesla.html

High frequency electricy is actually quite safe, but his backers (Westinghouse) didn't want electricity sent out for free. So Tesla had to lower the freqs to the 60cycle (Hz) model we know and use today.

I don't know physics either, but Tesla was beyond a lot of them. Some of his pattents could be put to use today again if only they would resurrect them. Such as a lightbulb that uses a single filament more like an antenna than a "normal" light bulb. It just requires very high frequencies to operate, much like a "radiowave" bulb GE "invented" some years back. More like the improved on one of Tesla's patents and called it their own.