[Amps] Arc distance

[Tom W8JI]

> Ian, I always learn something from your longer
> postings.  Often it's a summary of bits and pieces I
> already knew, more often it's new data.  Thanks for
> this.

Most interesting is that everyone with direct experience in 
an engineering or working in a scientific environment, even 
people in widely different areas who do not know each other, 
agree to the smallest detail on the basic physics and 
observations.

73 Tom