Re: Wire Length

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Ed Phillips <evp@xxxxxxxxxxx>


We know that Tesla was using the flat spiral coil as a 
spread-spectrum wireless transmitter.  He may have increased the 
spacing of the inner turns in order to facilitate the occurance of harmonics."

   We do?  The description here would appear to be a of a regular 
two-circuit Tesla coil and he is apparently referring to the two 
different frequencies which can be produced while the primary is 
being excited.  It would be interesting to see how he would calculate 
them, based on his statement about radily calculated.  I haven't seen 
any discussion of the topic at that early date although it was 
certainly well known within a few years.

Ed