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Recent content by Hop_David

  1. Hop_David

    Credulous skeptics

    Okay so he developed calculus tools to study planetary motion. So it follows Newton derived elliptical orbits in 1664 or 1666? Repeating a non sequitur over and over again doesn't make it any less ridiculous. Quite the opposite. If you're looking for the friend that prompted Newton to invent...
  2. Hop_David

    Credulous skeptics

    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. You keep trotting out...
  3. Hop_David

    Credulous skeptics

    Oh my gosh, you're correct! The Anni Mirabilis source does indeed give a date Newton derived elliptical orbits. In Newton's own words: "At length, in the winter between the years 1676 and 1677, I found the proposition that by a centrifugal force reciprocally as the square of the distance a...
  4. Hop_David

    Credulous skeptics

    That source had no citations. You make a lot of noise how you like Wikipedia because they cite their sources. Then you offer a page with no citations. You still haven't provided a citation showing a date when Newton derived elliptical orbits. As I've pointed out several times it is almost...
  5. Hop_David

    Credulous skeptics

    I don't see any citations on these paragraphs you like to trot out: And it's perhaps true that Newton used calculus to explain elliptical orbits. Although his arguments in Principia are more geometric in nature. But the footnote free article you cite does not say when Newton used calculus to...
  6. Hop_David

    Credulous skeptics

    I guess being three paragraphs down it's hard to find. Hope this helps: (From this Wikipedia article) You and another fellow were asking me why did I assume Tyson was talking about Halley? I pointed out that Tyson's timeline sure sounds like an addled description of the Newton Halley...
  7. Hop_David

    Credulous skeptics

    It seems obvious that Tyson's time line on the right is an addled attempt to describe actual history (left). But you want to argue they were two separate events? Go for it. What's the name of Newton's friend in this 1666 meeting? Can you provide a citation showing that such a meeting occurred...
  8. Hop_David

    Credulous skeptics

    According to this Wikipedia article Newton derived elliptical orbits in 1676-77 shortly after Huygens' 1673 paper You claim Newton derived elliptical orbits in 1666? Citation please.
  9. Hop_David

    Credulous skeptics

    Wikipedia is actually a pretty good source. I will put quotes from Wikipedia in blue. Interspersed in red will be Tyson's version along with my comments Halley's visit to Newton in Cambridge in 1684 probably occurred in August.[54] Tyson says the meeting happened before Newton turned 26.Which...
  10. Hop_David

    Credulous skeptics

    That article does not say Newton worked out elliptical orbits before he turned 26. Sorry.
  11. Hop_David

    Credulous skeptics

    Tyson also says Newton explained elliptical orbits before he turned 26. Are you choosing to ignore the part I put in red? Or do you have 4th grade reading skills?
  12. Hop_David

    Credulous skeptics

    Again, here's Brittanica's article on Halley. Thony's claims are easily verifiable by anyone who can use Google. *staff edit*
  13. Hop_David

    Credulous skeptics

    People get upset when Tyson uses falsehoods to support his anti-theist polemics. Imagine that.
  14. Hop_David

    Credulous skeptics

    So you're telling me the Halley/Newton encounter occurred before Newton turned 26? Oddly enough Britannica agrees the meeting occurred when Newton was in 40s. As does virtually every other Google hit. The only source saying it occurs before Newton turns 26 is Tyson. Duuude, have you heard of...
  15. Hop_David

    Credulous skeptics

    Nope. Looks like you need a little help reading. So here it is again with pertinent phrases emphasized. HTH. About 58 seconds into the above video Tyson tells us: "Then, a friend of his says, “Well, why do these orbits of the planets… Why are they in a shape of an ellipse, sort of flattened...
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