Eelectromagnetism In particle physics, the click at this page interaction the weak force or weak nuclear force is one of the four known fundamental interactions of nature, alongside the strong interaction, electromagnetism, and gravitation.
The weak interaction is responsible for radioactive decay, which plays an essential role in nuclear fission. The theory of the weak interaction is sometimes called quantum flavourdynamics QFDin analogy with the terms QCD dealing with the strong interaction and QED dealing with the electromagnetic force. However the term QFD is rarely used because the weak force is best understood in terms of electro-weak theory EWT. The Standard Model of particle physics, which does not address gravity, provides a uniform framework for understanding how the electromagnetic, weak, and strong interactions work.
An interaction occurs when two particles, typically but not necessarily half-integer spin fermions, exchange integer-spin, force-carrying bosons. The fermions involved in such exchanges Casino Royale 2006 Uhr Online-HD 720 mit be either elementary e. The mass of each of these bosons is far greater continue reading the mass of a proton or neutron, which is consistent with the short range of the weak force.
The force is in fact termed weak because its field strength over a given distance is typically several orders of magnitude less than that of the strong nuclear force or electromagnetic force.
The weak interaction has a coupling constant an indicator of interaction strength of between 10? The weak interaction has a very short range around 10?
At distances around 10? At distances of around 3? The nuclear force or nucleon—nucleon interaction or residual strong force Casino Royale 2006 Uhr Online-HD 720 mit the force between protons and neutrons, subatomic particles that are collectively called nucleons.
The nuclear force is responsible for binding protons and neutrons into atomic nuclei. Neutrons and protons are affected by the nuclear force almost Casino-Land-Club Glücksspiel. The mass of a nucleus is less than the sum total of the individual masses of the protons and neutrons which form it.
The difference in mass between bound and unbound nucleons is known as the mass defect. Energy is released when some large nuclei break apart, and it is this energy that is used in nuclear power and nuclear weapons At distances larger than 0.
Beyond this distance the force drops exponentially, until beyond about 2. Nucleons have a radius of about 0. At short distances less than 1. However, the Coulomb force between protons has a much greater range as it varies as the inverse square of the charge separation, and Coulomb repulsion thus becomes the only significant force between protons when Casino Royale 2006 Uhr Online-HD 720 mit separation exceeds about 2 to 2.
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