[time-nuts] A Research Proposal

[Hal Murray]

jimlux at earthlink.net said:
> Free space propgation delay for 5500 m is 18.5 milliseconds - compared  to
> 16.67 millisecond period of 60Hz.  A velocity factor of about 90% 

Neat.  Thanks.

What's going on?  I'm used to calculating the velocity from the dielectric 
constant.  Power lines have no obvious non-air dielectric.  Is the 
dielectric-constant only calculation ignoring some things that are significant 
in a power line?  If so, what?


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