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  • Originally posted by Stripe View Post
    The moon draws up tidal bulges, which get offset by the Earth's rotation such that the moon is drawn toward the closer one, accelerating it its orbit. The moon's pull on that closer tidal bulge in turn slows the Earth's rotation. Some people think it is friction that slows the rotation, but that's obviously wrong.

    Would you like to learn why?
    Yes, please. With citations to the scientific literature

    Comment


    • Originally posted by The Barbarian View Post
      Tidal rhytmites left a record of that. And yes, it has receded over that time. But it's not constant, because the tidal forces that transfer energy from the Earth to the Moon vary with the coastlines of continents.

      This paleontological evidence comes in the form of tidal rhythmites, also known as tidally laminated sediments. Rhythmites have been subjected to intense scrutiny over the last decade or so, and have returned strong results. Williams (1990) reports that 650 million years ago, the lunar rate of retreat was 1.95±0.29 cm/year, and that over the period from 2.5 billion to 650 million years ago, the mean recession rate was 1.27 cm/year. Williams reanalyzed the same data set later (Williams, 1997), showing a mean recession rate of 2.16 cm/year in the period between now and 650 million years ago. That these kinds of data are reliable is demonstrated by Archer (1996). There is also a very good review of the earlier paleontological evidence by Lambeck (1980, chapter 11, paleorotation)


      Slichter, Louis B.
      Secular Effects of Tidal Friction upon the Earth's Rotation
      Journal of Geophysical Research 68(14), July 15, 1963



      Actually, as you see, it was usually slower, but it varied over time. Average rate was a little more than half the current rate. It isn't gravity pushing the moon outward. It's the tranfer of kinetic energy from the Earth's rotation, to the moon, as a result of the Moon's tidal drag on the oceans:


      (best illustration, worst typo)



      In fact, it's much faster than usual now, due to the fragmentation of continents, increasing area of coasts.

      You forgot how gravity works; it doesn't push an orbiting body outward. It pulls it inward. The body orbits because the vector of gravity pulling it toward the planet precisely matches the vector moving it forward.



      The added energy gained by the Moon (by tidal forces slowing the Earth's rotation) moves it away. The farther out the Moon goes, it gains potential energy (because it takes work to move it to a higher orbit).

      BTW, the moon averages about 384,400 km from Earth. Which would be 38,440,000,000 centimeters. At 4 centimeters per year, that would mean 9,610,000,000 years to get to Nairobi, which would be before the solar system formed.

      At the actual average, it would be much longer. The actual rate couldn't be much great, because the limiting factor is the amount of energy that can be obtained by tidal forces on the oceans. The mass of the oceans is much less than the mass of the Moon. So it's not going to be feasible to move it that far in a hundred million years as you supposed. By about 2 orders of magnitude.
      Please dont confuse Stripey with numbers, especially those big ones. Once you get past 6, maybe 7 for his deity's restday, he has trouble.

      Comment


      • Originally posted by Stripe View Post
        The moon draws up tidal bulges, which get offset by the Earth's rotation such that the moon is drawn toward the closer one, accelerating it its orbit. The moon's pull on that closer tidal bulge in turn slows the Earth's rotation. Some people think it is friction that slows the rotation, but that's obviously wrong.

        Would you like to learn why?
        Tidal friction, in astronomy, strain produced in a celestial body (such as the Earth or Moon) that undergoes cyclic variations in gravitational attraction as it orbits, or is orbited by, a second body. Friction occurs between water tides and sea bottoms, particularly where the sea is relatively shallow, or between parts of the solid crust of planet or satellite that move against each other. Tidal friction on the Earth prevents the tidal bulge, which is raised in Earth’s seas and crust by the Moon’s pull, from staying directly under the Moon. Instead, the bulge is carried out from directly under the Moon by the rotation of the Earth, which spins almost 30 times for every time the Moon revolves in its orbit. The mutual attraction between the Moon and the material in the bulge tends to accelerate the Moon in its orbit, thereby moving the Moon farther from Earth by about three centimetres (1.2 inches) per year, and to slow Earth’s daily rotation by a small fraction of a second per year.
        https://www.britannica.com/science/tidal-friction
        This message is hidden because ...

        Comment


        • Originally posted by Jonahdog View Post
          He asked a question. Seems you are unable to respond with a cogent answer.
          I asked a question to you. I was not responding to him.

          You have all kinds of understanding problems.
          All of my ancestors are human.
          Originally posted by Squeaky
          That explains why your an idiot.
          Originally posted by God's Truth
          Father figure, Son figure, and Holy Spirit figure.
          Col 2:9 (AKJV/PCE)
          (2:9) For in him dwelleth all the fulness of the Godhead bodily.

          1Tim 4:10 (AKJV/PCE)
          (4:10) For therefore we both labour and suffer reproach, because we trust in the living God, who is the Saviour of all men, specially of those that believe.

          Something that was SPOKEN OF since the world began CANNOT be the SAME thing as something KEPT SECRET since the world began.

          Comment


          • Originally posted by Stripe View Post
            Watch, now Barbarian is going to say that the continents lined up carefully to slow the moon's departure.

            It's like he totally forgets all the times we've explained all this to him.

            Then he just gets flustered and angry before he starts lashing out.
            I've never seen Barb get flustered and angry about anything and he's certainly never lashed out at anyone. It's his very calmness and reasonable responses that really seem to wind up some of you fundamentalists which is a bit more than ironic. Did you have to chuckle at yourself three times in order to convince yourself?

            I mean, you're just the poster bearer for never going off the deep end, eh Stripe?

            Well this is fun isn't it?

            Comment


            • Originally posted by Right Divider View Post

              Don't you get tired of embarrassing yourself?
              Apparently you don't cos AIG is an absolute joke. Well, at least it is to those who can think outside of fundamentalist tripe anyway...
              Well this is fun isn't it?

              Comment


              • Originally posted by Arthur Brain View Post
                ... you fundamentalists ...
                Originally posted by Arthur Brain View Post
                ... fundamentalist tripe ...

                artie, maybe you'd be happier at a site that's not owned and run by Christian fundamentalists

                Comment


                • Originally posted by ok doser View Post
                  artie, maybe you'd be happier at a site that's not owned and run by Christian fundamentalists
                  We put the FUN in FUNdamentalism!
                  All of my ancestors are human.
                  Originally posted by Squeaky
                  That explains why your an idiot.
                  Originally posted by God's Truth
                  Father figure, Son figure, and Holy Spirit figure.
                  Col 2:9 (AKJV/PCE)
                  (2:9) For in him dwelleth all the fulness of the Godhead bodily.

                  1Tim 4:10 (AKJV/PCE)
                  (4:10) For therefore we both labour and suffer reproach, because we trust in the living God, who is the Saviour of all men, specially of those that believe.

                  Something that was SPOKEN OF since the world began CANNOT be the SAME thing as something KEPT SECRET since the world began.

                  Comment


                  • Don't atheists know that they are fundamentalists of the worst kind?

                    Comment


                    • Originally posted by Right Divider View Post
                      We put the FUN in FUNdamentalism!
                      Reminds me of a Simpsons episode...
                      Well this is fun isn't it?

                      Comment


                      • Originally posted by TrumpTrainCA View Post
                        Don't atheists know that they are fundamentalists of the worst kind?
                        All depends on who and why. Richard Dawkins is an expert on evolutionary biology and quite the humanitarian but his hardcore atheistic stance and fumbling forays into belief and addressing/criticizing that are amateurish and annoying for certain. Otherwise, there's plenty an atheist or "non believer" be it agnostic et al who are hardly hardline about it.
                        Well this is fun isn't it?

                        Comment


                        • Originally posted by Arthur Brain View Post
                          Richard Dawkins is an expert on evolutionary biology ...

                          like saying susan miller is an expert at astrology

                          Comment


                          • Originally posted by Arthur Brain View Post
                            Reminds me of a Simpsons episode...
                            The Simpsons seems about your speed. Probably where you learn about science.
                            All of my ancestors are human.
                            Originally posted by Squeaky
                            That explains why your an idiot.
                            Originally posted by God's Truth
                            Father figure, Son figure, and Holy Spirit figure.
                            Col 2:9 (AKJV/PCE)
                            (2:9) For in him dwelleth all the fulness of the Godhead bodily.

                            1Tim 4:10 (AKJV/PCE)
                            (4:10) For therefore we both labour and suffer reproach, because we trust in the living God, who is the Saviour of all men, specially of those that believe.

                            Something that was SPOKEN OF since the world began CANNOT be the SAME thing as something KEPT SECRET since the world began.

                            Comment


                            • Originally posted by Right Divider View Post
                              The Simpsons seems about your speed. Probably where you learn about science.
                              Hardly but I do appreciate some of the satire where it comes to religious fundamentalism.
                              Well this is fun isn't it?

                              Comment


                              • Originally posted by Arthur Brain View Post
                                All depends on who and why. Richard Dawkins is an expert on evolutionary biology and quite the humanitarian but his hardcore atheistic stance and fumbling forays into belief and addressing/criticizing that are amateurish and annoying for certain. Otherwise, there's plenty an atheist or "non believer" be it agnostic et al who are hardly hardline about it.
                                Yes: "his hardcore atheistic stance and fumbling forays into belief and addressing/criticizing that are amateurish and annoying for certain"

                                He was the one who called Mother Theresa a fascist, right?

                                Comment

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