04-11-2019, 10:22 AM
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Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 2,976
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Quote:
Originally Posted by Dove
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With this historical background presented, I will explain my view of the cause of the precession of the cause of the equinoxes as requested. It is based on Newton’s explanation and is to my mind, a perfect one, consistent with the law of spiral planetary motion.
His definition is subject to the necessary constraints on him, not to openly recognise the spiral nature of planetary motion, which he dared not venture into. His explanation we recall was delivered in the ‘Principia’. Which we can examine in next post. I will post again soon.
Alan D. 2/11/19
PS I will try to send a graphic that will greatly in my explanation
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Hi Alan,
Are you referring to the motion described as Apsidal Precession as depicted in the animated graphic linked below? ...
https://en.wikipedia.org/wiki/Apsidal_precession#/media/File recessing_Kepler_orbit_280fra mes_e0.6_smaller.gif
Best
JA
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