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Grade 11General Physics

what is Heisenberg uncertainty principle?

Profile image of ravi kant
12 Years agoGrade 11
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Profile image of Apoorva Arora
12 Years ago
Inquantum mechanics, theuncertainty principleis any of a variety of mathematical inequalities asserting a fundamental limit to the precision with which certain pairs of physical properties of a particle known ascomplementaryvariables, such aspositionxandmomentum p, can be known simultaneously. For instance, in 1927,Werner Heisenbergstated that the more precisely the position of some particle is determined, the less precisely its momentum can be known, and vice versa.The formal inequality relating thestandard deviationof position σxand the standard deviation of momentum σpwas derived byEarle Hesse Kennardlater that year and byHermann Weylin 1928:
\sigma _{x}\sigma _{p}\leq \frac{\not{h}}{2}
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Apoorva Arora
IIT Roorkee
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