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Magnetism vs. Gravity
I have heard many people refer to the fact that gravity is a weak for
compared to the electromagnetic force. Can someone expand on this? I have heard the example of a magnet lifting a nail off the earth's surface, therefore it is stronger then gravity, but is this a legitimate example? What if we were far out into space, where the effect of gravity from nearby bodies was at a minimum, would the magnet be "stronger" not having to fight against gravity? BV. www.iheartmypond.com |
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In article , BenignVanilla
wrote: I have heard many people refer to the fact that gravity is a weak for compared to the electromagnetic force. Can someone expand on this? I have heard the example of a magnet lifting a nail off the earth's surface, therefore it is stronger then gravity, but is this a legitimate example? The electromagnetic force is not just magnets. It also explains the repulsion of electron shells surrounding atoms (and the forces holding atoms together). A better example of the EMF being stronger than gravity is how the pull of the entire earth is insignificant compared to the force of the atoms in concrete pushing against the atoms in the your shoes. If gravity was stronger, you would be pulled toward the center of the earth. What if we were far out into space, where the effect of gravity from nearby bodies was at a minimum, would the magnet be "stronger" not having to fight against gravity? Not really. The forces only 'fight' in your mind. You have two forces, add them together to get the net force. It's just math. If the two forces are in opposition, and one gets weaker, then the you can think of the NET force as "stronger". |
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BV Glad you read my posts(I hope so) Just posted that earlier. It was
just posted(he did not leave a name) that gravity can't pull us though Earth's surface to its center. Did that person ever hear of the Pauli Exclusion Principle? Gravity created the other 3 forces. Gravity is the strongest force that nature has. Nature can balance the EM force. It does not balance the force of gravity. Not many electrons,or protons traveling through space. Gravitons have no such problem. That is why the Earth orbits the sun,and not by an EM force but the force of gravity. Gravity can hold galaxies together,and its force also created opposite charge to particles to hold the structure of atoms together. There is a samneness to EM attraction and gravity,but gravity is the creater(father) and that means there has to be a sameness. Bert |
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Dude, you don't know what you're talking about.
In article , G=EMC^2 Glazier wrote: Did that person ever hear of the Pauli Exclusion Principle? Yes, what point are you trying to make? Something about the band theory of solids? Electron and neutron degeneracy in the collapse of stars? Those are my guesses, but you'll have to give more info. Gravity created the other 3 forces. No. Gravity is the strongest force that nature has. No, it is the weakest. Giving the strong nuclear force a value of 1, the force of gravity is 6 x 10^-39 (EMF is 1/137, and the weak nuclear force is 10^-5) Nature can balance the EM force. I cannot figure out what you mean by this. What is balance? What motivation are you attributing to nature? Gravitons have no such problem. Gravitons are only theoretical and have yet to be observed in particle collisions. There is no clear proof they exist. the Earth orbits the sun,and not by an EM force but the force of gravity. Yes. Although gravity is VERY weak, it's range is infinite and it's summative effect on large masses can be significant. Gravity...[]... force also created opposite charge to particles to hold the structure of atoms together. No. There is a samneness to EM attraction and gravity,but gravity is the creater(father) and that means there has to be a sameness. I don't understand what you mean by sameness. Gravity has yet to be unified with the other 3 forces. |
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"I.G." wrote:
Dude, you don't know what you're talking about. In article , G=EMC^2 Glazier wrote: [snip] the Earth orbits the sun,and not by an EM force but the force of gravity. Yes. Although gravity is VERY weak, it's range is infinite and it's summative effect on large masses can be significant. Taken on the whole both the Earth and the Sun are so close to being neutral in charge that there's no appreciable electrical interaction between them to start with. -- Odysseus |
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I G If you were a reader of my posts you would not need to ask these
questions. Since this post is about magnetism and gravity and you don't understand that magnetism has a positive and negative charge,and like EM its charges can cancel each other out. Gravity has only attraction and that is why gravity becomes the strongest force in the universe. That is why it was able to create the BB and all that is. Bert PS I G this gives me a great thought for my "What if" post |
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"G=EMC^2 Glazier" wrote in message ... I G If you were a reader of my posts you would not need to ask these questions. Since this post is about magnetism and gravity and you don't understand that magnetism has a positive and negative charge,and like EM its charges can cancel each other out. Gravity has only attraction and that is why gravity becomes the strongest force in the universe. That is why it was able to create the BB and all that is. Bert PS I G this gives me a great thought for my "What if" post Bert...do you equate gravity's effect at a distance as evidence of it's strength? BV. www.iheartmypond.com |
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BV I don't equate gravities force because of distance. Like EM force
it weakens at the rate of the inverse square of the distance. Gravity gets stronger with the increase of particles. EM force gets stronger with the increase flow of electrons. BV Since this seems to interest you read my today's "what if" Let me add this I think even a bar magnetisim field can go to infinity.. I say this by looking at its lines of force not all of its lines of force curled back to its opposite pole. Some go straight out into space. Interesting if gravity compressed the Earth down to the size of a ping pong ball its gravity would not increase(did not gain particles,and that means the moon would stay in its same orbit and circle this blackhole like almost nothing happened. Bert |
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BV I think what I posted about the mass of the Earth taking up the
space of a ping pong ball ,and the moon staying in its same orbit like nothing happened to the Earth shows why gravity has to be measured from the center of the Earth to the center of the Moon. Measurements from horizon to horizon can throw measurements off. Sounds like what NASA would do. After all they did screw up meters with yards. A 9 year old would have more brains Bert |
#10
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"G=EMC^2 Glazier" wrote in message ... BV I think what I posted about the mass of the Earth taking up the space of a ping pong ball ,and the moon staying in its same orbit like nothing happened to the Earth shows why gravity has to be measured from the center of the Earth to the center of the Moon. Measurements from horizon to horizon can throw measurements off. Sounds like what NASA would do. After all they did screw up meters with yards. A 9 year old would have more brains Bert Interesting thought, Bert. I wonder...are there any examples in the books of a larger object orbiting a much denser, yet physically smaller object? BV. www.iheartmypond.com |
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