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  2. Heisenberg picture - Wikipedia

    en.wikipedia.org/wiki/Heisenberg_picture

    Quantum mechanics. In physics, the Heisenberg picture or Heisenberg representation[1] is a formulation (largely due to Werner Heisenberg in 1925) of quantum mechanics in which the operators (observables and others) incorporate a dependency on time, but the state vectors are time-independent, an arbitrary fixed basis rigidly underlying the theory.

  3. Observer effect (physics) - Wikipedia

    en.wikipedia.org/wiki/Observer_effect_(physics)

    Scientists. v. t. e. In physics, the observer effect is the disturbance of an observed system by the act of observation. [1][2] This is often the result of utilising instruments that, by necessity, alter the state of what they measure in some manner. A common example is checking the pressure in an automobile tire, which causes some of the air ...

  4. Dynamical pictures - Wikipedia

    en.wikipedia.org/wiki/Dynamical_pictures

    v. t. e. In quantum mechanics, dynamical pictures (or representations) are the multiple equivalent ways to mathematically formulate the dynamics of a quantum system. The two most important ones are the Heisenberg picture and the Schrödinger picture. These differ only by a basis change with respect to time-dependency, analogous to the ...

  5. Uncertainty principle - Wikipedia

    en.wikipedia.org/wiki/Uncertainty_principle

    Canonical commutation rule for position q and momentum p variables of a particle, 1927. pq − qp = h / (2 πi). Uncertainty principle of Heisenberg, 1927. The uncertainty principle, also known as Heisenberg's indeterminacy principle, is a fundamental concept in quantum mechanics. It states that there is a limit to the precision with which ...

  6. The Physical Principles of the Quantum Theory - Wikipedia

    en.wikipedia.org/wiki/The_Physical_Principles_of...

    The book discusses quantum mechanics and one 1931 review states that this is a "less technical and less involved account of the theor[y]". [2] This book has been cited more than 2,000 times. [3] In the book, after briefly discussing various theories, including quantum theory, Heisenberg discusses the basis for the fundamental concepts of ...

  7. Copenhagen interpretation - Wikipedia

    en.wikipedia.org/wiki/Copenhagen_interpretation

    v. t. e. The Copenhagen interpretation is a collection of views about the meaning of quantum mechanics, stemming from the work of Niels Bohr, Werner Heisenberg, Max Born, and others. [1] While "Copenhagen" refers to the Danish city, the use as an "interpretation" was apparently coined by Heisenberg during the 1950s to refer to ideas developed ...

  8. Werner Heisenberg - Wikipedia

    en.wikipedia.org/wiki/Werner_Heisenberg

    Werner Karl Heisenberg (/ ˈhaɪzənbɜːrɡ /; [2] German: [ˈvɛʁnɐ kaʁl ˈhaɪzn̩bɛʁk] ⓘ; 5 December 1901 – 1 February 1976) [3] was a German theoretical physicist, one of the main pioneers of the theory of quantum mechanics, and a principal scientist in the Nazi nuclear weapons program during World War II.

  9. Matrix mechanics - Wikipedia

    en.wikipedia.org/wiki/Matrix_mechanics

    Matrix mechanics is a formulation of quantum mechanics created by Werner Heisenberg, Max Born, and Pascual Jordan in 1925. It was the first conceptually autonomous and logically consistent formulation of quantum mechanics. Its account of quantum jumps supplanted the Bohr model 's electron orbits.