Hop_David
Member
LO! Still ignoring why Newton said that he invented calculus in the first place. You even admitted as much. You do not need calculus to reason out that there is an inverse square relation in "circular orbits"
Yes, Newton developed calculus tools to study motion and acceleration.
But how does that demonstrate he worked out elliptical orbits in 1664 or 1666 (or whenever)? It doesn't follow.
And Newton didn't rely on calculus in Principia. His arguments were mostly geometric.
And one more time, the quote that you ignored:
" When Halley asked Newton's opinion on the problem of planetary motions discussed earlier that year between Halley, Hooke and Wren,[55] Newton surprised Halley by saying that he had already made the derivations some time ago;"
You keep trotting out that paragraph to demonstrate Newton derived elliptical orbits in 1664 or 1666 (or whenever).
It doesn't occur to you that 1676-1677 also occurs some time before the 1684 meeting of Newton and Halley?
Far from refuting my timeline that paragraph strongly supports it.