Is the strong/weak force infinite like electromagnetism

In summary, the strong and weak forces are short-range forces that fall off exponentially and are transmitted by particles with mass. The range of a short-range force can be calculated by dividing the constant hc by the mass of the particle, resulting in a very small distance for the W boson.
  • #1
Jarfi
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Electromagnetic forces go infinetly far but decrease dramatically by distance. I was wondering is the strong and weak force are Only within a certain zone with a radius or do they stretch infinetly far.

On wiki it says they have short range but it doesn't say if it ever stops completely.
 
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  • #2
Jarfi, Electromagnetism and gravity are the two long-range forces. This is related to the fact that the particles that transmit their effects have mass zero. The weak force is a short-range force, which means it falls off exponentially. It is transmitted by a pair of particles, the W boson with mass around 80 GeV and the Z boson with mass 90 GeV. The range of a short-range force is related to the Compton wavelength of its particle, and can be directly calculated from the mass. All you have to do is divide the constant hc by the mass, where hc = 197.5 MeV-f. (A fermi 'f' is a unit of length, 10-13 cm and is roughly the size of an atomic nucleus.) So for the W boson we have 197.5 MeV-f/80 GeV, or about 0.0025 f. (Or about 2.5 x 10-16 cm.) Pretty small.
 
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1. Is the strong force infinite like electromagnetism?

The strong force, also known as the strong nuclear force, is not infinite like electromagnetism. It has a limited range, only acting on particles within the nucleus of an atom. This range is typically less than 10^-15 meters, making it much shorter than the range of electromagnetism.

2. What is the difference between the strong and weak force?

The strong force is responsible for binding together protons and neutrons in the nucleus of an atom, while the weak force is responsible for radioactive decay and other nuclear processes. The strong force is much stronger than the weak force, but it has a much shorter range. Additionally, the strong force only acts on particles with a certain property called "color charge," while the weak force acts on all particles.

3. Can the strong force be harnessed or used in technology?

Due to its short range and specific action on particles within the nucleus, the strong force cannot be harnessed or used in technology like electromagnetism can. However, understanding the strong force is crucial for many technological advancements, such as nuclear power.

4. Is the strong force responsible for all nuclear reactions?

No, the strong force is not responsible for all nuclear reactions. While it is responsible for binding together protons and neutrons, other nuclear reactions, such as fission and fusion, involve different forces and processes.

5. How is the strength of the strong force measured?

The strength of the strong force is measured by the strong coupling constant, also known as alpha_s. This constant is a measure of the strength of the force between two quarks. It is a dimensionless quantity, meaning it has no units, and its value is approximately 0.118 at low energies.

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