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#87718 - 11/18/03 02:11 AM Re: analemma  
Joined: Mar 2000
Posts: 11,613
Jackie Offline
Jackie  Offline

Carpal Tunnel

Joined: Mar 2000
Posts: 11,613
Louisville, Kentucky
the Equation-of-Time. Oh, this is SO cool! Thanks, you-all! The tilt of the earth, and also the elliptical orbit. Neat!


#87719 - 11/19/03 10:55 PM Re: analemma  
Joined: Jan 2001
Posts: 13,858
wwh Offline
Carpal Tunnel
wwh  Offline
Carpal Tunnel

Joined: Jan 2001
Posts: 13,858
I've got it! One of the few things I remember from calculus over sixty years ago is: "Always examine the means and the extremes."
Suppose the earth's orbit were a perfect circle, and you were able to turn the sun into a huge stroboscope, that flashed only once in twenty four hours, and had it synch'd so the blip hit on the Greenwich meridian vertically.
If you could instantly on Jan 1 turn earth's orbit into an ellipse that shortened earth's distance from the sun, the blip would arrive early.
Isn't that easy to understand?


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