Strong force Definition and 100 Threads

Hello everybody! :shy: What is the strength of the strong force between, for instance, a proton and a neutron separated by a distance on the order of femtometers (1fm and 2fm and 3fm) in Newton? Thank you in advance! ∞

I've been thinking about dark matter, WIMPs and neutrinos, and why these particles would not interact with matter through the strong force. All massive particles interact gravitationally, all charged particles interact electromagnetically, (I don't fully understand the weak force, so I won't...

I watched a program of his in which it was claimed that since mass bends space in accordance to General Relativity, then in the case of very large stars it becomes a strong force to the point of being able to crush a star to a single nucleus (Neutron Stars) or less (Black Holes). His argument...

Recently, in the Scientific American blog http://blogs.scientificamerican.com/observations/2012/11/29/person-of-the-year-nomination-for-higgs-boson-riddled-with-errors/?WT_mc_id=SA_CAT_physics_20121130 the author criticizes Time Magazine for its science reporting, which of course is nothing...

Does the strong force have any major role in neutrons stars other than obviously holding individual nuclei together? Would low energy neutrons tend to "clump" together in the core?

Reading about the strong force and the residual strong force I'm a bit confused about the interaction. Largely it keeps mentioning it the result of particle exchange and mentions that it has infinite distance, but that the residual strong force doesn't have infinite distance. However, it doesn't...

I'm still highly confused about the weak force. Every time I read about it I get something along the lines of it is responsible for beta decay which to my understanding is when a proton or a neutron exits from the atom's nucleus. One thing I have trouble understanding is that if the strong...

At 2.5 femtometer away from a quark the strong force is said to significantly loose power and become insignificant. At how many femtometers does the strong force completely loose any amount of tug?

Hello, I am a general physicist, pursuing it for fun. I work in solar, and the other day while driving up to Sacramento I had a interesting train of thought. From the data we have collected, one interpretation could be that on average, the universe is expanding in every direction at an...

In a Black Hole, is gravity the only force drawing matter and energy into it, or deep inside at a minute scale (3 femtometers), is the Strong Force also operant ? Bonus questions: 1) Would it be true to say that without the Strong Force, there would be no matter? 2) In the "splitting of the...

Because the Strong Force and gravity are both forces that attract, could they actually be the same thing, manifesting in different ways at different distances?

; Can someone explain to me (in layman's terms,) how it might be possible to associate the interactions of the up/down quarks in the strong nuclear force as analogous to the way electrons and photons interact in quantum electrodynamics ?

I have heard that the strong nuclear force is stronger then the electromagnetic force at short ranges, "Up to two and a half times the proton diameter". Ok, so i have an approximation of the length it dominates over the electromagnetic force, but i don't know where the force starts from; is it...

Please teach me this: Why must strong interaction theory be QCD(SU(3)) theory?Because asymptotic freedom of strong force is the characteristic of any non-Abelian gauges theories.E.g why must it not be SU(2)? Thank you very much for your kind helping.

Say we could slowly vary the strength of the strong force. What would happen to the "size" of proton if the strength of the strong force tended to zero and infinity? Thanks for any help!

If I have a low energy neutron and I bring it close to a nucleus it will be captured when it gets close enough. How can I calculate the shape of the potential well of the nucleus for neutron capture? I keep reading that it is due to the strong force, which I agree with. But it is some...

Let me start off by saying that I am no professor of any kind, i am simply a high school student in way over his head concerning particle interactions. Without a class to teach me, i have used the magic of the internet to attempt to get a rudimentary understanding of these interactions. I...

Hi I am just a newb with interest in physics. Maybe someone can help me out: Is there any theory that explains the strong force or bonding together of protons and neutrons in the center of the atom with a vortex in the center of the atom similar to a black holes vortex. And theorizes that...

I was wondering how mesons or the strong force is accounted for in mass defect. Nucleons individually have more mass then when they are bound together in a nucleus of an atom. I saw a teacher/professor speak on youtube. He said the binding energy (strong force) was calculated as part of the...

Please teach me this: In collider of lepton scattering from hadron,I think that the electro-weak force is interaction between lepton and hadron, then hadron being excited,because of this inducing the strong force has an effect of producing new hadrons(if possible).So that electro-weak force is...

Sorry if this is a bit stupid, but I have absolutely no grasp on chromodynamics or really any nucleic forces... Is there a 'classical' way of expressing the strong force in an equation? By classical, I mean extremely simple, approximate way of describing it for two point particles. Like a...

I'm reading The Lightness of Being by Frank Wilczek. The strong force falls off rapidly with distance. And yet when we attempt to separate two quarks the force increases enormously. I assumed the strong force acted between hadrons (= groups of quarks) and between quarks but this...

I'm working on a problem involving decay of a 2 strange/2 anti-strange tetraquark particle. 4 sample decay diagrams are given and I am to describe them and choose which is most prevalent. In on diagram, two of the strange/anti-strange quarks become two down/anti-down quarks via gluon through...

Hello, can anyone help. Does the strong force affect the weak force in any way. Or do both not interact with each other. Thank you.

If the strong force is what is used to describe the attraction in the atomic nucleus, how is it possible to split atoms without them constantly re-pairing? a free charge doesn't seem like it would exist due to the strong force. I'm missing something right?

Hi, I have been taught at school that the strong force is responsible for holding the nucleons together in the nucleus but becomes repulsive below about 1.5 femtometres. I now read that the strong force is also responsible for holding the quarks together inside the nucleons, although the...

I want to know the work of strong force during fusion of two atoms (say hydrogen), It is known that atoms need to get close enough to fuse but what does strong force especially "color charges" or "gluon" perform which causes fusion?

Say we can set the strength of the strong force weaker, can the glouns then range further and further from a quark? Can we eventually get the strong force to look like the electromagnetic force as far as the range of the force is concerned? Thanks for any help!

I apologize for the very simple question, but I find often the simplest questions are the ones not answered in books. If a free-floating proton collides with a free-floating neutron, do they get bound together by the strong nuclear force? Let's say it's a low-energy collision - both...

Hi this is a very elementary question. Is the strong force a color force? Or a favor force? Or a combination color and favor? Also with photons (massless) we have a r^-2 force but with massless gluons the force increase with r (do not know as what function) how can this be? Thanks.

I have read that the strength of the strong interaction between two quarks is roughly the same as the weight of a 10 tonne truck (i.e. 105 N). There is a relationship between Force and distance and work and energy and mass (and I am aware of the extent to which Newtonian mechanics is...

this is probably either a really dumb question, or just a dumb question. But with my remedial knowledge of these fundamental forces it seems a logical question to ask. Gravity is deemed the weakest force, but maybe that's just a range related perspective. It gets stronger with decreasing...

How can electrons that make up a current not repel each other at far distances due to their like charges? I understand why protons are bunched up together , because of the strong force. Though electrons are not packed up against one another like protons and neutrons, they are still a short...

If nucleons are held together by residual strong force could could gravity be residual residual strong force reaching outside the atom, causing atoms to tend to clump together?

Can light travel through an atom? If yes, how will it emerge? If no, why not? Will it interact with any subatomic particles?

Hello, I'm a novice in this field, but there is one thing I have been wondering about for a long time. Maby you could help me understand it? I think it must be enough to only use the quark-quark forces to describe all nuclear reactions, even things like n-> p+e+v, but it is perhaps a lot more...

Is it possible that gravity and the strong force could be the same just on a smaller scale giving it different properties?

(If you don't feel like reading all three paragraphs just skip to the sentence written in bold.) So I am autodidacting myself through the world of (quantum) physics, just the concepts of course, no math and I finally got to a stage where I can use my present knowledge to (partially) deduce...

I Heard That the gamma function explains the strong nuclear force . \Gamma \left( z \right) = \int\limits_0^\infty {t^{z - 1} } e^{ - t} dt How does it explain the Force? Thanks

I could benefit from someone shedding some light on a couple of questions that I have regarding the speed of various entites: 1) It seems that the speed of gravity, e.g, if the sun disappeared, is the speed of light WRT things I've read. What is it that would inherently cause gravity to travel...

How is strong nuclear force measured?

Is the strong force (carried) by elemenary particles or does this force exsist every where in the universe, so that no matter where particles are the strong force can act on them, sorry if this is a crapy question but i do not know.

Homework Statement A beam of low energy protons is observed to scatter elastically from a target of neutrons. Sketch the variation of the differential cross section with the resulting scattering angle and comment on a characteristic feature of the strong force than can be deduced...

Hello, Here I go again :-p I don't understand a few things, let me all questions put in a paragraph so that I don't miss anything What is an energy? (I can't understand the definition provided by the encyclopedia) And, what's up with the vacuum energy? If no particles are there, how can energy...

Is a neutron star held together mainly by the strong force? Are they dense enough so that this is the case, or is gravity the only thing to consider? What about black holes?

I have heard a number of times that the force of gravity is fairly insignificant compared to such forces as the strong force. Why is this, and how can one mathematically compute the differences in force? [Moderator's note: @Evo isn't the true OP of this thread. The true OP requested deletion...

Even a brief study of the history of the events that led to the discovery of the strong force is of great interest. The first significant event in the chain of events which led to an understanding of the forces operating within the atomic nucleus was the discovery of radio activity. It was...

I have a problem on my homework that lists several different reactions involving K mesons and asks which of them can happen via the strong interaction. I've listed a couple of them below, and I'm hoping that someone can tell me why these can or can't proceed via the strong interaction: (K-)...

Wouldn't it be true to say that as E=mc(sqared) that a high engergy particle also has high mass simply because if we revert to the therory of imcertainty (i think its called that) in which the errors to which we record everything reach such a large value that they are infact exceptionally larger...

with intense gravity the strong force between quarks are weakened. would it be possible that under extreme gravitational effects that quarks from other atoms join to make the theoretical tetraquark?