The TC in Pats.No.645576 & 649621

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Mddeming-at-aol-dot-com>

Hi All! 
        Grandson #1 wants to reproduce some of Tesla's early designs for 
next year's Science Fair.  While reading through the Tesla Patents on Energy 
Conduction through Rarefied Atmosphere (0.1 atm ~7 miles), NOT the ionosphere 
(<0.0001 atm ~50 miles), I noticed that he gives very specific coil 
dimensions: Primary one Turn Diameter of 8ft (244 cm) , capacitor 0.04 uf, 
fr=230kHz, V(in)=50KV. 
This seems to be contradictory. Using the flat spiral formula (NR)^2/(8R+11B) 
with N=1, R=48" and B=0.25", I get L= ~6 uH for the primary. Back-calculating 
from fr=1/(2pi(LC)^0.5) with C=0.04 and fr=230kHz) I get L= ~12 uH. 
Obviously, both cannot be right. The illustrations in the patent clearly show 
a ~2 turn primary. 
        The secondary is also a flat spiral, of 50 Turns #8 wire. (Tesla 
call this "thin wire") R=47" ,B=47", N=50--> Ls=14.68 mH, V(out)= ~2-4 MV. 
The Axes of the coils are horizontal. At this point, the equations that I am 
familiar with no longer apply. (e.g., self capacitance, etc.) Can any of the 
theoreticians, mathematicians, et. al. help with these calculations and 
resolve the apparent discrepancies? 

Matt D.