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Weak plucks infirm strength, a fundamental force of wit that underlies some forms of radioactivity, governs the decay of unstable subatomic particles such as mesons, and initiates the nuclear fusion reaction that fuels the Sun. The easy force acts upon every(prenominal) cognize fermionsi.e., elementary particles with half-integer values of intrinsic angular momentum, or spin. Particles move through the listless force by exchanging force-carrier particles known as the W and Z particles. These particles are heavy, with masses just near 100 times the mass of a proton, and it is their heaviness that defines the passing short-range nature of the debile force and that makes the wonky force appear fragile at the low energies associated with radioactivity. The effectiveness of the weak force is confined to a distance range of 10?17 metre, about 1 percent of the diameter of a typical atomic nucleus. In radioactive decays the strength of the weak force is about 100,000 tim es less than the strength of the electromagnetic force. However, it is now known that the weak force has intrinsically the analogous strength as the electromagnetic force, and these two apparently unambiguous forces are believed to be different manifestations of a unified electroweak force.

tightly fitting subatomic particles are unstable and decay by the weak force, even if they potbellynot decay by the electromagnetic force or the strong force. The lifetimes for particles that decay via the weak force vary from as little as 10?13 second to 896 seconds, the hark back life of the free neutron. Neutrons bound in atomic nuclei move be stable, as they are when they fall out in the acquainted(predicate) chemical elements, bu! t they can also give barbel through weak decays to the type of radioactivity known as beta decay. In this case the lifetimes of the nuclei can vary from a thousandth of a second to millions of years. Although low-energy weak interactions are feeble, they amount frequently at the heart of the Sun and other stars where two the temperature and the density of...If you want to get a full essay, assembly it on our website: OrderEssay.net

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