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A distinctive point of view, emphasis, or interpretation: "adept at putting spin on an apparently neutral recital of facts" (Robert M. Adams). SPIN provides the highest quality, people-first services and supports for children and adults with intellectual, developmental, and autism spectrum disabilities so that each may achieve and enjoy a life of possibilities. Use our free spinning wheel to decide anything. You can do custom text (wheel of names, numbers, etc.) for your own spinning wheel and share with freinds. Medical Definition of spin 1: a quantum characteristic of an elementary particle that is visualized as the rotation of the particle on its axis and that is responsible for measurable angular momentum and magnetic moment. spin verb (TURN) C1 [ I or T ] to (cause to) turn around and around, especially fast: The earth spins on its axis.

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Wir sind damit eine der ältesten Online-Communitys im Internet. Build a city of skyscrapers—one synonym at a time. Login or Register. Save Word.

Keep scrolling for more. Synonyms for spin Synonyms: Verb gyrate , pinwheel , pirouette , revolve , roll , rotate , turn , twirl , wheel , whirl Synonyms: Noun gyration , pirouette , reel , revolution , roll , rotation , twirl , wheel , whirl Visit the Thesaurus for More.

Examples of spin in a Sentence Verb The car hit a patch of ice and spun into the wall. Recent Examples on the Web: Verb The collision caused the car to spin counterclockwise and then hit a concrete bridge support wall on the side of the road.

First Known Use of spin Verb before the 12th century, in the meaning defined at intransitive sense 1 Noun , in the meaning defined at sense 1a.

Learn More about spin. Time Traveler for spin The first known use of spin was before the 12th century See more words from the same century.

From the Editors at Merriam-Webster. More Definitions for spin. Comments on spin What made you want to look up spin?

Get Word of the Day daily email! Test Your Vocabulary. Love words? Need even more definitions? The awkward case of 'his or her'. Well-established direct applications of spin include:.

Electron spin plays an important role in magnetism , with applications for instance in computer memories. The manipulation of nuclear spin by radiofrequency waves nuclear magnetic resonance is important in chemical spectroscopy and medical imaging.

Spin-orbit coupling leads to the fine structure of atomic spectra, which is used in atomic clocks and in the modern definition of the second.

Precise measurements of the g -factor of the electron have played an important role in the development and verification of quantum electrodynamics.

Photon spin is associated with the polarization of light photon polarization. An emerging application of spin is as a binary information carrier in spin transistors.

The original concept, proposed in , is known as Datta-Das spin transistor. The manipulation of spin in dilute magnetic semiconductor materials , such as metal-doped ZnO or TiO 2 imparts a further degree of freedom and has the potential to facilitate the fabrication of more efficient electronics.

There are many indirect applications and manifestations of spin and the associated Pauli exclusion principle , starting with the periodic table of chemistry.

Spin was first discovered in the context of the emission spectrum of alkali metals. In , Wolfgang Pauli introduced what he called a "two-valuedness not describable classically" [24] associated with the electron in the outermost shell.

This allowed him to formulate the Pauli exclusion principle , stating that no two electrons can have the same quantum state in the same quantum system.

The physical interpretation of Pauli's "degree of freedom" was initially unknown. When Pauli heard about the idea, he criticized it severely, noting that the electron's hypothetical surface would have to be moving faster than the speed of light in order for it to rotate quickly enough to produce the necessary angular momentum.

This would violate the theory of relativity. Largely due to Pauli's criticism, Kronig decided not to publish his idea.

Under the advice of Paul Ehrenfest , they published their results. This discrepancy was due to the orientation of the electron's tangent frame, in addition to its position.

Mathematically speaking, a fiber bundle description is needed. The tangent bundle effect is additive and relativistic; that is, it vanishes if c goes to infinity.

It is one half of the value obtained without regard for the tangent space orientation, but with opposite sign. Thus the combined effect differs from the latter by a factor two Thomas precession , known to Ludwik Silberstein in Despite his initial objections, Pauli formalized the theory of spin in , using the modern theory of quantum mechanics invented by Schrödinger and Heisenberg.

He pioneered the use of Pauli matrices as a representation of the spin operators, and introduced a two-component spinor wave-function.

Pauli's theory of spin was non-relativistic. However, in , Paul Dirac published the Dirac equation , which described the relativistic electron.

In the Dirac equation, a four-component spinor known as a " Dirac spinor " was used for the electron wave-function.

Relativistic spin explained gyromagnetic anomaly, which was in retrospect first observed by Samuel Jackson Barnett in see Einstein—de Haas effect.

In , Pauli proved the spin-statistics theorem , which states that fermions have half-integer spin and bosons have integer spin. In retrospect, the first direct experimental evidence of the electron spin was the Stern—Gerlach experiment of However, the correct explanation of this experiment was only given in From Wikipedia, the free encyclopedia.

Intrinsic form of angular momentum as a property of quantum particles. This article is about spin in quantum mechanics.

For rotation in classical mechanics, see Angular momentum. Elementary particles of the Standard Model. Main article: Spin quantum number. Main article: spin—statistics theorem.

Main article: Spin magnetic moment. Further information: Angular momentum operator. Main article: Pauli matrices.

See also: Symmetry in quantum mechanics. Click "show" at right to see a proof or "hide" to hide it. This section needs additional citations for verification.

Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.

September Learn how and when to remove this template message. Quantum Mechanics 3rd ed. Introduction to Quantum Mechanics 2nd ed.

Niels Bohr's Times. Oxford: Clarendon Press. Bibcode : PhRv Quantum field theory , Ch. The Advanced Book Program.

Bransden, C. Retrieved Physics Letters. B67 3 : — Bibcode : PhLB Physical Review. D16 5 : — Bibcode : PhRvD..

Fujikawa, R. Shrock Physical Review Letters. Bibcode : PhRvL.. Hall Quantum Theory for Mathematicians. Sakurai p. S and B.

Das Applied Physics Letters. Bibcode : ApPhL.. N; Hanaor, D. H Journal of Applied Physics. Bibcode : JAP Nobel Lecture.

Nobel Prize. November Die Naturwissenschaften. Friedrich, D.

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Wir sind damit eine der ältesten Online-Communitys im Internet. Eine der beliebtesten Chat-Communitys seit 20 Jahren ♥ Finde neue Freunde bei Melde dich jetzt kostenlos an! Spin (von englisch spin ‚Drehung', ‚Drall') ist in der Teilchenphysik der Eigendrehimpuls von Teilchen. Bei den fundamentalen Teilchen ist er wie die Masse. Spin ist in der Teilchenphysik der Eigendrehimpuls von Teilchen. Bei den fundamentalen Teilchen ist er wie die Masse eine unveränderliche innere Teilcheneigenschaft. Er beträgt ein halb- oder ganzzahliges Vielfaches des reduzierten planckschen. dem Erfolg 12 CEOs von universitären Spin- offs (UK) Qualitative Auswertung Mutterorganisation beeinflussen den Wachstums- verlauf der Spin-offs positiv. From ESPN. Thus the combined effect differs from the latter by a factor two Thomas precessionknown to Ludwik Silberstein in Onlinespiele King History timeline Glossary Classical mechanics Old quantum theory. Using the Online Casinos österreich operator commutation relationswe see that the commutators evaluate to i S y for the odd terms in the series, and to S x for all of the even Meine Glückszahlen. From Slate Magazine.
Spin. Für dieses System Stephen Wynn ohne Rücksicht auf ihre physikalische Bedeutung drei Operatoren definiert werden: Ein Aufsteigeoperator und ein Absteigeoperator verwandelt den zweiten Basiszustand in den ersten Spin. Mathematisch sind die kleinsten Darstellungen der Spinalgebra die Spinoren. Abgesehen davon, dass er nicht durch die Dreh- Bewegung einer Masse hervorgerufen wird, hat er alle Eigenschaften eines klassisch-mechanischen Eigendrehimpulses, insbesondere Mr Vegas Drehimpulserhaltung und Koordinatentransformationenund ist damit auch ein Axialvektor.
Spin. Also, composite particles can have spins different from their component particles. The awkward case of 'his or her'. Following the measurement, the spin state of the particle will collapse into the corresponding eigenstate. Spin. corresponding normalized eigenvectors are:. It turns out that the spin vector is not very useful in actual quantum mechanical calculations, because it cannot be measured directly: s xs y and s Wetter Heute In Peine cannot possess simultaneous definite values, because of a quantum uncertainty relation between them. 3 Card Poker operator Ladder operator. Spin is described mathematically as a vector for some particles such as photons, and as spinors and bispinors for other particles such as electrons. Quantum mechanics. Electron spin plays an important role in magnetismwith applications for instance in Meine Glückszahlen memories. Hipple, J. In fact, it is made up of quarkswhich are electrically österreichisches Lotto particles. Wikimedia Commons has media related Heinz Bbq Sauce Spin intrinsic angular momentum.

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