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Dean ![]() Special Collaborator ![]() ![]() Retired Admin and Amateur Layabout Joined: May 13 2007 Location: Europe Status: Offline Points: 37575 |
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Gravity is called weak because it is weak in relation to the other forces (electromagnetism, strong & weak neuclear). If we were just talking about its affect on mass then the others are extremely weak by comparison (ie they have no effect). In absolute terms it is strong enough to main planets as spheroids and keep them in stable orbits around a star, it acts over sufficiently large distances to pull the galaxies in our local neighbourhood towards the "Great Attractor". It is not a weakling.
Edited by Dean - August 03 2013 at 04:23 |
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What?
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Equality 7-2521 ![]() Forum Senior Member ![]() ![]() Joined: August 11 2005 Location: Philly Status: Offline Points: 15784 |
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Coupling Constant |
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"One had to be a Newton to notice that the moon is falling, when everyone sees that it doesn't fall. "
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HackettFan ![]() Forum Senior Member ![]() ![]() Joined: June 20 2012 Location: Oklahoma Status: Offline Points: 7951 |
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Yes, and the coupling constant comes right out of quantum mechanics. The lack of distance spanned in the coupling constant calculation is simply an arbitrary artifact of the measurement used. Since we're comparing two different paradigms, a theory internal artifact is only helpful in conveying that one theory has greater internal beauty than the other. Since the disparity in strength of the forces doesn't actually bring an answer to any particular problem that I'm aware of I am not swayed by the internal beauty argument. Which is stronger electromagnetism or gravity? Gravity or dark energy? This is missing the point, I think. A theory independent observation is that the forces have different scope relations. One is responsible for tidal effects and the others don't because the scope of gravity is broader than the other three, but less than that of dark energy. Explain the make up of these different scope relations among the forces and you have a theory of everything. |
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Icarium ![]() Forum Senior Member ![]() ![]() VIP Member Joined: March 21 2008 Location: Tigerstaden Status: Offline Points: 34083 |
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are you saying there is 5 rather then 4 forces of nature, gravity force, electro-magnetic force, strong and weak nuclear force and dark energy force,
is dark energy force explaining the very big like general relativity or is it describing the small quantum mechanics. also Hackett, would you join me at the Quantum Club and Cafe
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The Bearded Bard ![]() Special Collaborator ![]() ![]() Honorary Collaborator Joined: January 24 2012 Location: Behind the Sun Status: Offline Points: 12859 |
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No! How many times must I say this? He's not prog!
![]() Oh, sorry! Thought it said Sting Theory. Carry on! Edited by The Bearded Bard - August 03 2013 at 14:09 |
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Equality 7-2521 ![]() Forum Senior Member ![]() ![]() Joined: August 11 2005 Location: Philly Status: Offline Points: 15784 |
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So you're arguing that we can't compare them. Fine. If we're going to compare them, then this is the only sensible way to do it. And under this framework we must conclude that gravity is the weakest. |
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"One had to be a Newton to notice that the moon is falling, when everyone sees that it doesn't fall. "
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Gerinski ![]() Prog Reviewer ![]() ![]() Joined: February 10 2010 Location: Barcelona Spain Status: Offline Points: 5154 |
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I'm not sure that Dark Energy has been formally considered as a "force" (I don't think so), although I would say that it could well be a candidate, it can exert work (sending two clumps of matter away from each other overcoming the gravitational attraction between them). But it does not "explain" anything, it just says that the expansion of spacetime is accelerating.
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