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Re: Sine curve to approximate declination
From: Frank Reed CT
Date: 2004 May 20, 14:28 EDT
From: Frank Reed CT
Date: 2004 May 20, 14:28 EDT
George H wrote:
"It seems clear, from this, that the approximation, by a simple sine curve, has (to use Frank's descriptive term) "broader-shoulders" than the true declination curve; not the other way round as Frank suggested."
Just a different choice of independent variable, George. See my post to Trevor Kenchington.
Frank R
[ ] Mystic, Connecticut
[X] Chicago, Illinois
"It seems clear, from this, that the approximation, by a simple sine curve, has (to use Frank's descriptive term) "broader-shoulders" than the true declination curve; not the other way round as Frank suggested."
Just a different choice of independent variable, George. See my post to Trevor Kenchington.
Frank R
[ ] Mystic, Connecticut
[X] Chicago, Illinois