Gravity verses electromagnetic attraction

  • Thread starter pulsar28
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  • #51
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So what is wrong with "All mass generates gravity" ?
You kept saying : "All mass generates gravity, just not the neutron." This statement implies that a neutron doesn't generate any gravity. You should have put the NOT before the JUST, and then it would have been correct.
 
  • #52
malawi_glenn
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This is an Astrophysics forum not a GR forum. If we can only talk about GR, then maybe it should be moved there?
This thread has lost focus from the original question, therefor you may want to start a new thread. GR is a part of astrophysics, and cosmology, so try the cosmology forum.
 
  • #53
malawi_glenn
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You kept saying : "All mass generates gravity, just not the neutron." This statement implies that a neutron doesn't generate any gravity. You should have put the NOT before the JUST, and then it would have been correct.
ah then I see! Thanx! :-)
 
  • #54
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I like the topic though, only put differently. The only problem is that if science had resolved this question, then we could talk about it, but since science has not, then there is only speculation, and that isn't allowed. The next best thing to do is try and more clearly understand what gravity is, and what EM is. If all we can do is say curved spacetime and go no further as to what that means, then we are all just wasting time.
 
  • #55
cristo
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W3pcq: Do you actually have a question, or are you just trying to stir someone up the wrong way? You seem to be asking random questions, and flitting from one to another. IF you have a well-posed question, that you have actually thought about and are confused by, then feel free to ask it in the relevant forum. But, you need to stop the sort of posting style you have adopted in this thread, now!

I should also point you to the Pf Guidelines which disallow any overly speculative posts. I encourage all users to report such posts and, if you feel you are being personally attacked, like you said here, to report the offending post so that the matter can be looked into, rather than responding.

Thank you.
 
  • #56
malawi_glenn
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What question? What the difference between gravity and EM is?

I think contemporary science has a very good explanation for that, which I and others here have argued for. Also science has good explanation what EM and gravity is.

Maybe it is just you who dont know what curvature in space-time is? That is a physical concept, and here lies a big difference - physicists thinks and reason in a different way that a non-physicists does, therefore it is hard for a layman to understand things in the same way as a physicists does.
 
  • #57
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There is an interesting way to calculate the electromagnetic force without using the magnetic field. An example is given at johnwilliams22dothi5dotcom. This same technique can be applied to Newton's theory, except it needs to be slightly modified to account for the fact that the force on the influenced particle is proportional to its energy. Does anyone have a good reference for this?
 
  • #58
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Although many if not most hold onto the hope that some time (most likely long from now) all of the fundamental forces will somehow be unified... according to our understanding, gravity and E&M are very different.
For instance, E&M forces don't act on things without charge (i.e. neutral sums of charged particles or neutrinos(?) ).
Similarly, gravity doesn't effect massless particles (i.e. photons).
The details of the differences aren't too important, but another one of the main things, is that gravity is about a billion times weaker than the E&M forces.

Gravity is more like 41 order of magnitude smaller then electromagnetism. Which makes a billion look small.
 
  • #59
russ_watters
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I just happened to wade into this, but I'm struck by the possibility that much of the issue here might be due to a grammar error:
All mass generates gravuty, just not the neutron. [emphasis added]
Did you reverse those two words? Did you mean 'All mass generates gravity, including the neutron and all other massive particles'?
 
  • #60
Redbelly98
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Russ, I think that statement got cleared up eventually:

Sorry, you should have said it different, you must not know the english language very well. You should have said it like this: All mass generates gravity, NOT just the neutron.
 
  • #61
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Also, gravity is strictly an attractive force, whereas electromagnetism can work to attract or repel.
Hi there Nabeshin,

Could you do me a favour and explain to me how attraction is actioned or possible?

As I was under the impression all forces are Repulsive..

Cheers,

Peter J schoen..
 

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