W

I would like to know the speed that gravity travels. I am making the assumption that since the Sun?s gravity affects the Earth and vice versa and so on, that gravitons have to move and therefore they have a speed.

10 Answers
Thank you for answering me in advance
S

The whole silver tongued math that space and time are "bent" is really starting to wear on me. All these fanciful musings into the "fabric" that makes up space, are mere crutches to fill the simple void that Humanity needs to express that which it cannot grasp. "Dents in space-time"? Please stop with the puckey until there is a quantitative theory for gravity.

Don't know about anyone else, but I'm tired of it. Simply put, is it so wrong for space to be a void, with islands of matter, and stray particles in between? Simply an empty Vaccuum, and no more?

LIght has a speed limit related to the maximum amount of energy an electron can absorb.. Light behaves as a particle, and a wave, because it IS a charged particle. It is not "bent" around a "black hole", due to the fact that light HAS MASS, no matter how miniscule. So, gravity can and does redirect it's path and trajectory.

This whole "time slows down" garbage with cesium, or rubidium in orbit, is a fanciful crock. All it ever proved is that an atomic istope decays more slowly in the presence of less gravitational force. At sea level, it decays at a given rate. Floating in orbit, it decays at a different rate. It's kind of hard to have an isotope do ten or twenty thousand MPH at sea level. Velocity probably factors in too.

End of line.

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J
Calfla74 My reference to magnetism was just that it's a force that just exists, though magnetism does have a measurable propagation speed. If one could flip a magnet over fast enough, you could mechanically produce radio waves, which do have a measurable 'speed'. In the case of gravity, it can't be altered, turned on or off or reversed, so any propagation speed can't be measured.

This is one more instance of why I like Mybestanswer is that I learn also, just by not knowing an answer to a question. Here's a website that suggests the 'speed of gravity' is faster than the speed of light or possibly very close to infinite as I envisioned (that gravity just 'is') by using the sun's gravity as an example. It takes 8 and some odd minutes for the light to reach earth, but the detectable gravity is from the sun's actual current position, not from where we see it as it was 8 minutes ago. I may not be understanding this fully as it's quite a lot to digest.

http://metaresearch.org/cosmology/speed_of_gravity.asp

So, Weskil13 if you can make any more sense out of this than I can, it may provide you with the answer you seek. This is the best I can do.

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J

First, I'm not a physicist, so with that said, take it for what it's worth. I don't believe gravitons have been proven to exist (yet!). For the time being, gravity is just a 'force', similar to magnetism. It can't be turned on or off, it just is, therefore, it doesn't propagate or travel, such as light. Objects with mass have an attractive force to other objects with mass. The larger the mass, the stronger the attraction. In the case of the sun and earth, the gravitational pull of the sun on the earth is balanced by the centrifugal force created by the earth's speed as it orbits the sun.

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S

We have no quantitative theory to prove gravity, only the hypothesis that it is a compounded force related to magnetism, and the accumulation of matter.

When matter is packed densely enough, electrons are stripped from their orbits, effecitvely creating a ball of "proton soup". This creates a mass of purely positive protons, and this positive magnetic field attracts matter which still has stable electrons in it's orbits.

However, that is only a hypothesis...

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C

Measurements from several years ago suggest that the gravitation effect propagates at the speed of light. Gravitons have not been proven to exist yet, but are postulated as a quantum of the space-time continuum on the Planck scale. Gravity is not related to magnetism. It is, in fact, caused by the curvature of space-time produced by the presence of mass-energy. Gravity, in the picture of general relativity, isn't really a force. It is merely inertial movement through a curved space-time.

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S

One other thing to add is that if light speed is "the limit", how does a "black hole" hold a galaxy together?

Isn't the Earth a huge bar magnet? Isn't the sun? Wouldn't a "black hole" be an even bigger magnet?

It seems Einstein should have been bald, from pulling all his hair out...

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W

Thank you for answering me

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W

Thank you for answering me

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W

Thanks for answering me

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W

Thanks for the answer

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