|
In particle physics, the strong interaction (also called the strong force, strong nuclear force, or color force) holds quarks and gluons together to form protons, neutrons and other particles. The strong interaction is one of the four fundamental interactions, along with gravitation, the electromagnetic force and the weak interaction. The word strong is used since the strong interaction is the "strongest" of the four fundamental forces; its typical field strength is 100 times the strength of the electromagnetic force, some 10 times as great as that of the weak force, and about 10 times that of gravitation. The strong interaction is also the force that binds protons and neutrons together. In this context it is called the nuclear force (or residual strong force), and it is the residue strong interaction between the quarks that make up the protons and neutrons. The strong force is thought to be mediated by gluons, acting upon quarks, antiquarks, and the gluons themselves. This is detailed in the theory of quantum chromodynamics (QCD). From Wikipedia under the
GNU Free Documentation License Why does the strong nuclear force only act within a nucleus? Q. Other forces act over long distances by the inverse square law. The strong force is supposedly not affected by distance at all, and is supposedly 100 times stronger than the mutual repulsion of protons. But if that's true, why doesn't it cause the atoms of a molecule to fuse together? Asked by Dilbert - Wed Nov 5 18:56:06 2008 - - 2 Answers - 0 Comments A. >Other forces act over long distances by the inverse square law. For gravity, and the electrical forces, yes. For magnetism, and the more exotic forces, no. For example, the weak nuclear force (responsible, among other things, for beta decay) does not behave according to a simple geometric distance law. Ooops. That's just how it is. Basically it's like that because the exchange particle is not massless, but is the W and Z boson, both of which are massive unlike the photon. As for the strong force, over short (intranuclear) ranges it does indeed appear as a distance-invariant force. But over larger distances it weakens exponentially, so any given nucleus is 'blind' to the presence of other nuclei in other atoms. Again, this is because… [cont.] Answered by jrcg - Wed Nov 5 19:10:11 2008 where from the strong nuclear force arises from that holds the subatomic particles together? Q. where from the strong nuclear force arises from that holds the subatomic particles together? Asked by drpandari - Sat Sep 20 03:10:10 2008 - - 1 Answers - 0 Comments A. from the exchange of mesons between nucleons Answered by kuiperbelt2003 - Sat Sep 20 04:35:02 2008 Why is there a strong nuclear force?
Q. Why is there a strong nuclear force? Asked by Wanderer - Wed Feb 25 14:51:01 2009 - - 1 Answers - 0 Comments A. Phew - what a good question! In general, science cannot deal with 'why' like questions. It can only describe how things are, and try to unpick the reasons for relationships between observed things. Q: Why is there a strong force? A: Because gluons exist! And gluons couple to quarks, like photons couple to charged particles. They were predicted by Murray Gellman (on the basis that the hadron zoo had to make use of a smaller number of simpler particles; quarks), and inferred from scattering experiments at Stanford in '79. Answered by jrcg - Wed Feb 25 15:14:13 2009 From Yahoo Answer Search: "Strong nuclear force"  aether.lbl.gov 149px x 227px | 0.96kB [source page] hitting a ping pong ball or a tennis ball back and forth between two people As long as this meson exchange can happen the strong force is able to hold the participating nucleons together The nucleons must be extremely close together in order for this exchange to happen The distance required is about the diameter of a proton or a neutron If a proton or neutron can get closer  www4.nau.edu 243px x 360px | 17.60kB [source page] liquid form 273 373 K This zone will be farther from hotter stars Whether a planets is in the habitable zone in part depends upon planetary albedo and atmospheric greenhouse effects hadron subatomic particles that are composed of quarks and which are acted on by the strong nuclear force Hadrons may be subdivided into mesons and baryons Mesons consist of quark  tyler.net 460px x 673px | 83.20kB [source page] known fundamental forces are electromagnetism the strong nuclear force the weak nuclear force and gravitation From subnuclear elementary particles with electric charge called quarks to the cosmos itself the electromagnetic force is ubiquitous and limited only by the finite boundary of our holonomic subluminal universe From high energy subnuclear particles to From Yahoo Image Search: "Strong nuclear force" |
