Earth Rotation Slowing down
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Effects of moon's gravity Because the Moon's mass is a considerable fraction of that of the Earth (about 1:81), the two bodies can be regarded as a double planet system, rather than as a planet with a satellite. The plane of the Moon's orbit around the Earth lies close to the plane of the Earth's orbit around the Sun (the ecliptic), rather than in the plane perpendicular to the axis of rotation of the Earth (the equator) as is usually the case with planetary satellites. The mass of the Moon is sufficiently large, and it is sufficiently close, to raise tides in the matter of the Earth. In particular, the water of the oceans bulges out along both ends of an axis passing through the centers of the Earth and Moon. The average tidal bulge closely follows the Moon in its orbit, and the Earth rotates under this tidal bulge in just over a day. However, the rotation drags the position of the tidal bulge ahead of the position directly under the Moon. As a consequence, there exists a substantial amount of mass in the bulge that is offset from the line through the centers of the Earth and Moon. Because of this offset, a portion of the gravitational pull between Earth's tidal bulges and the Moon is perpendicular to the Earth-Moon line, i.e. there exists a torque between the Earth and the Moon. This boosts the Moon in its orbit, and decelerates the rotation of the Earth. So the result is that the mean solar day, which is nominally 86400 seconds long, is actually getting longer when measured in SI seconds with stable atomic clocks. (The SI second, when adopted, was already a little shorter than the current value of the second of mean solar time.[9]) The small difference accumulates every day, which leads to an increasing difference between our clock time (Universal Time) on the one hand, and Atomic Time and Ephemeris Time on the other hand: see ΔT. This makes it necessary to insert a leap second at irregular intervals. If other effects were ignored, tidal acceleration would continue until the rotational period of the Earth matched the orbital period of the Moon. At that time, the Moon would always be overhead of a single fixed place on Earth. Such a situation already exists in the Pluto-Charon system. However, the slowdown of the Earth's rotation is not occurring fast enough for the rotation to lengthen to a month before other effects make this irrelevant: About 2.1 billion years from now, the continual increase of the Sun's radiation will cause the Earth's oceans to vaporize, removing the bulk of the tidal friction and acceleration. Even without this, the slowdown to a month-long day would still not have been completed by 4.5 billion years from now when the Sun will evolve into a red giant and possibly destroy both the Earth and Moon. (Tidal acceleration is also moving the Earth outward from the Sun, but it is unknown whether it will be enough to save it from destruction.) Tidal acceleration is one of the few examples in the dynamics of the solar system of a so-called secular perturbation of an orbit, i.e. a perturbation that continuously increases with time and is not periodic. Up to a high order of approximation, mutual gravitational perturbations between major or minor planets only cause periodic variations in their orbits, that is, parameters oscillate between maximum and minimum values. The tidal effect gives rise to a quadratic term in the equations, which leads to unbounded growth. In the mathematical theories of the planetary orbits that form the basis of ephemerides, quadratic and higher order secular terms do occur, but these are mostly Taylor expansions of very long time periodic terms. The reason that tidal effects are different is that unlike distant gravitational perturbations, friction is an essential part of tidal acceleration, and leads to permanent loss of energy from the dynamical system in the form of heat. In other words, we do not have a Hamiltonian system here. Why Does the Earth Rotate? http://www.universetoday.com/14491/why-does-the-earth-rotate/
Comments
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Do you know the day was only six hours when the Earth was formed?
https://www.researchgate.net/publication/26541355_The_Length_of_the_Day_A_Cosmological_Perspective -
Im from Kurdistan
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Science is becoming a circus of never observed statements. Never observed big bang. Never observed life from no life. Never observe matter from nothing. And a NEVER OBSERVED rotating earth. And nobody thinks that this is a bit out of kilter. Kurdistan you are a liar. We would have seen video footage of a spinning earth if such a thing existed. Live feeds from the moon would have been as easy as pie
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Do you have any proof of all this you mention here. How can I validate it?
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Want to know how you can know the earth is flat? Here are some numbers and if you know what centrifugal force is and how to do force vectoring, do the math yourself and see, you are not orbiting or rotating.
Here is a centrifugal force calculator from an engineering site...http://www.engineeringtoolbox.com/centripetal-acceleration-d_1285.html
Earth's orbit values.
Velocity 29,722 m/s
Radius 149,668,992,000 m
Mass 22,679.6 kg or greater
Earth's rotation values.
Velocity 464.922 m/s @ the equator
Radius 6,371,390 m
Mass 4,250 kg or greater
1 G is the same as 1 slug or 32 ft/s^2 or 143 Newtons, which is "gravity."
https://www.pavilionbroadway.co.uk/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/l/s/lsa_molten_vase_cube_h17cm_pale_sapphire_1.jpg -
Billlllllions of years ago you have to BELIEVE by faith because it was SOOOOOOOOOO Long ago hahaha
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what do you know about the power of gravity ?
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So the moon can move things 250,000 miles away with no physical contact? With this removal of logic I should be able to move the moon simply by waiving at it. Action @ a distance is insanity not science. "There is no Energy in matter other than that received from its environment." Dr. Nikola Tesla
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well think of it this way you get to sleep just a verrrrrrrryyyyyy little amount more every day =D correct me if i am wrong XD
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once the earth is slowed too much where it will stop (soon), that faster seeming time will stop. at some point, the earth will then reverse its rotation in the other direction. our perception of time, possibly our reality is all based on this magnetic field. if earth stopped & reversed how would we perceive things around our existence?
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that doesn't make any sense. from what I thought as the rotation slows more and more, "our perception of TIME" will feel it get shorter and shorter. faster days. would feel like a 16hr day and not a 24hr/day. cause if the rotation of the earth is slower, I would think, it would be less gravity and when there's less gravity, well "light is freed up" so TIME, like light is freed up and not so bound down. has to do with theory of relativity.
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hahahaa...if we survive as a species till then !
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DOES IT MEAN AFTER 1 000 000 000 WE WILL SLEEP LONGER
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Lol that doesnt prove that God didnt made the earth,because you dont even know if it was there 400 millions years ago...Just because the earth is slowing down,that doesnt mean that it wasnt created.The car slows down but that doesnt mean that it existed 400 millions years ago
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What the heck am I gonna do with the extra two hours.
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Just destroy the moon. Problem solved.
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personally i dont believe our solar system is some sort of inertial system that will someday stop. It might slow down and it might speed up. And there are external forces (contrary to "internal" gravity) that creates indefinite dynamic equilibrium among all celestial bodies.. cant prove it but radio astronomy has found good clues already such as Birkeland currents everywhere in space..
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yes but thats actually fractions of a second ! NASA calculated from Chile's last Earthquake that the day became shorter by 1.26 microseconds that is (0.00000126) seconds.. so minute, but of course over time that add up and as well as other Earthquakes that happen around the world !
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yet NASA says the days became shorter because of some earthquake or something
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yey
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