Interesting thread.
Speaking of great circle calculators,
I have a freeware great circle/geodesic calculator,
GCGC, on my web site below.
GCGC has been accepted by the US NGS
as "User Contributed Software."
Have fun.
Cheers, 73,
Ron McC.
w2iol@...
Ronald C. McConnell, PhD
WGS-84: N 40º 46' 57.9" +/-0.1"
W 74º 41' 21.3" +/-0.1"
FN20ps.77GU96 +/-
V +5058 H +1504
<
http://home.earthlink.net/~rcmcc>
There is no reason anyone would want a computer
in their home.
- Ken Olson, founder Digital Equipment Corp., 1977