quantum mechanics wikipedia - EAS
- From Simple English Wikipedia, the free encyclopedia Quantum mechanics explains how the universe works at a scale smaller than atoms. It is also called quantum physics or quantum theory. Mechanics is the part of physics that explains how things move and quantum is the Latin word for 'how much'.
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See all on Wikipediahttps://en.wikipedia.org/wiki/Quantum_mechanicsQuantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles. It is the foundation of all quantum physics including quantum chemistry, quantum field theory, quantum technology, and quantum
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See moreQuantum mechanics allows the calculation of properties and behaviour of physical systems. It is typically applied to microscopic systems: molecules, atoms and sub-atomic particles. It has been demonstrated to hold for
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See moreFree particle
The simplest example of quantum system with a position degree of freedom is a free particle in a single spatial dimension. A free particle is one which...
See moreSince its inception, the many counter-intuitive aspects and results of quantum mechanics have provoked strong philosophical debates and many interpretations. The arguments centre on the probabilistic nature of quantum mechanics, the difficulties
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See moreIn the mathematically rigorous formulation of quantum mechanics, the state of a quantum mechanical system is a vector belonging to a (separable) complex Hilbert space . This vector is postulated to be normalized under the Hilbert space inner product, that is, it obeys ,
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See moreQuantum mechanics has had enormous success in explaining many of the features of our universe, with regards to small-scale and discrete
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See moreClassical mechanics
The rules of quantum mechanics assert that the state space of a system is a Hilbert space and that observables of the system are Hermitian operators acting on vectors in that space – although they do not tell us which Hilbert...
See moreWikipedia text under CC-BY-SA license- https://en.wikipedia.org/wiki/Introduction_to_quantum_mechanics
Quantum mechanics is the study of matter and its interactions with energy on the scale of atomic and subatomic particles. By contrast, classical physics explains matter and energy only on a scale familiar to human experience, including the behavior of astronomical bodies such as the Moon. Classical physics is still used in much of modern science and technology. However, towards the end of the 19th century, scientists discovered phenomena in both the large (macro) and the sma…
Wikipedia · Text under CC-BY-SA license - https://simple.wikipedia.org/wiki/Quantum_mechanicsSee more on simple.wikipedia.orgPhotons are particles that are point-sized, tinier than atoms. Photons are like "packets" or packages of energy. Light sources such as candles or lasers produce light in bits called photons. The more photons a lamp produces, the brighter the light. Light is a form of energy that behaves like the waves in water or radio waves…
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- https://en.wikipedia.org/wiki/History_of_quantum_mechanics
- The history of quantum mechanics is a fundamental part of the history of modern physics. Quantum mechanics' history, as it interlaces with the history of quantum chemistry, began essentially with a number of different scientific discoveries: the 1838 discovery of cathode rays by Michael Faraday; the 1859–60 winter statement of the black-body radiat...
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- https://en.wikipedia.org/wiki/Applications_of_quantum_mechanics
- Quantum physics is a branch of modern physics in which energy and matter are described at their most fundamental level, that of energy quanta, elementary particles, and quantum fields. Quantum physics encompasses any discipline concerned with systems that exhibit notable quantum-mechanical effects, where waves have properties of particles, and part...
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- https://sco.wikipedia.org/wiki/Quantum_mechanics
Quantum mechanics (cried quantum physics or quantum theory an aa) is a branch o physics which deals wi physical phenomena at microscopic scales, whaur the action is on the order o the Planck constant.It departs frae classical mechanics primarily at the quantum realm o atomic an subatomic length scales. Quantum mechanics provides a mathematical description o much o …
- https://en.wikipedia.org/wiki/Relativistic_quantum_mechanics
Combining special relativity and quantum mechanics. One approach is to modify the Schrödinger picture to be consistent with special relativity.. A postulate of quantum mechanics is that the time evolution of any quantum system is given by the Schrödinger equation: = ^ using a suitable Hamiltonian operator Ĥ corresponding to the system. The solution is a complex-valued …
- https://en.wikipedia.org/wiki/Quantum_statistical_mechanics
Quantum statistical mechanics is statistical mechanics applied to quantum mechanical systems.In quantum mechanics a statistical ensemble (probability distribution over possible quantum states) is described by a density operator S, which is a non-negative, self-adjoint, trace-class operator of trace 1 on the Hilbert space H describing the quantum system. . This can be …
- https://brilliant.org/wiki/quantum-mechanics
May 25, 2022 · Quantum mechanics [QM] is a branch of physics which describes physical systems so that properties like the energy or angular momentum are discrete quantities that are multiples of a smallest unit or quantum. A famous …
- https://zh.wikipedia.org/wiki/量子力学
量子力学（英語：quantum mechanics）是物理學的分支學科。 它主要描写微观的事物，与相对论一起被认为是现代物理学的两大基本支柱，许多物理学理论和科学，如原子物理学、固体物理学、核物理学和粒子物理学以及其它相关的學科，都是以其为基础。. 19世紀末，人們發現舊有的經典理論並沒有辦 ...
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