Richard Harrison wrote:
[...] Pythagoras who found the approximate value of pi by [...]
He could measure
straight lengths. He found the value to be 3.1416 for the approximate
value of pi which multiplied by the radius would equal the perimeter of
the circle.

He should have measured the diameter instead, which is easier than
measuring the radius (and would have given him the correct answer).

Just yanking your chain. Good discussion.

73,
kz1o

Dave wrote:
"He should have measured the diameter instead, which is easier than
measuring the radius (and should have given him the correct answer)."

Dave is correct. The circumference is pi times the diameter. The radius
is only 1/2 the diameter. I miswrote.

Best regards, Richard Harrison, KB5WZI

Ed wrote:
How would a three sided loop work?"

ON4UN`s "Low-Band DXing" says:
"---the delta loop can be called the poor man`s quad loop."

However the patterns and performance with various options are presented
because it requirea only one tall support and is easy to erect.

ON4UN`s book is published by ARRL.

Best regards, Richard Harrison, KB5WZI