TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

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The intrinsic angular momentum of an elementary particle or nucleus, which exists even when the particle is at rest, as distinguished from orbital angular momentum.  3, fiche 1, Anglais, - quantum%20mechanical%20spin

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Elementary particles can be described in terms of a few simple properties. The most obvious of these are the mass and electric charge of the particle.... There is a... property which all particles carry, quantum mechanical spin. The name spin comes from an analogy with classical electro-magnetics. In classical electromagnetic theory, it is well known that a charged particle that is moving through a magnetic field will be deflected. If the particle... is spinning about some axis the deflection will be changed; i. e. the particle will go in a different direction than if it wasn’t spinning. The effect will depend on both the rate of spin and the rotation axis. In quantum mechanics, a similar effect is observed with any quantum particle. When passed through magnetic fields, they behave as if they are spinning electric charges. What's more, they behave as if their rates of spin are integral 0, 1, 2,... or half-integral(1/2, 3/2,...) of a base unit... much like charges come in basic multiples of the electron's charge. The concept of spin here is a bit more abstract than in the classical case. With a classical particle you can paint a little dot on the particle... and directly measure the rotation rate by counting the number of times you see the spot in a minute. This is not possible for quantum particles. They are not little spinning balls in that sense.  1, fiche 1, Anglais, - quantum%20mechanical%20spin

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frustrated spin  4, fiche 1, Anglais, - quantum%20mechanical%20spin

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down-spin, up-spin  4, fiche 1, Anglais, - quantum%20mechanical%20spin

Fiche 1,  Justifications,  Français

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Moment cinétique intrinsèque des particules élémentaires et des noyaux atomiques.  2, fiche 1, Français, - spin

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Il s'agit [...] d'une propriété essentiellement quantique qui n'admet pas d'interprétation en mécanique classique.  3, fiche 1, Français, - spin

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spin demi-entier, spin entier, spin frustré, spin non frustré  4, fiche 1, Français, - spin

Fiche 1,  Justifications,  Espagnol

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Momento angular intrínseco de un sistema. Se aplica especialmente a las partículas elementales y a los núcleos  1, fiche 1, Espagnol, - esp%C3%ADn

Fiche 2,  Justifications,  Anglais

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All objects have "spin, "or angular momentum--everything from galaxies to subatomic particles. In the quantum world, subatomic particles can spin only with certain amounts of angular momentum. In fact, all particles of the world can be divided according to their spins into just two types : bosons and fermions. Fermions, named in honor of Enrico Fermi, are those with half-integral spin :½, 3/2, 5/2, and so on, measured in units of Planck's constant. Bosons, named after Satyendra Bose, have integral spin : 0, 1, 2, and so on.  2, fiche 2, Anglais, - integral%20spin

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Spin: [Quant. Mech.] The intrinsic angular momentum of an elementary particle or nucleus, which exists even when the particle is at rest, as distinguished from orbital angular momentum.  3, fiche 2, Anglais, - integral%20spin

Fiche 2,  Justifications,  Français

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Dans la nature, les physiciens ont recensé deux grandes familles de particules : les fermions : particules ayant un spin demi-entier (1/2, 3/2, 5/2, etc.), les bosons : particules ayant un spin entier (0, 1, 2, etc.).  2, fiche 2, Français, - spin%20entier

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En physique quantique [...] il existe deux types de particules : - celles ayant un spin nul ou entier (photon, phonon, He₄ Méson^µ) qui obéissent à la statistique de Bose-Einstein : ces particules sont appelées des bosons, elles peuvent occuper plusieurs sous-états identiques, - celles ayant un spin demi-entier [...] appelées des fermions [...]  3, fiche 2, Français, - spin%20entier

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

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All objects have "spin, "or angular momentum--everything from galaxies to subatomic particles. In the quantum world, subatomic particles can spin only with certain amounts of angular momentum. In fact, all particles of the world can be divided according to their spins into just two types : bosons and fermions. Fermions, named in honor of Enrico Fermi, are those with half-integral spin :½, 3/2, 5/2, and so on, measured in units of Planck's constant. Bosons, named after Satyendra Bose, have integral spin : 0, 1, 2, and so on.  2, fiche 3, Anglais, - half%2Dintegral%20spin

Record number: 3, Textual support number: 1 OBS

Spin: [Quant. Mech.] The intrinsic angular momentum of an elementary particle or nucleus, which exists even when the particle is at rest, as distinguished from orbital angular momentum.  3, fiche 3, Anglais, - half%2Dintegral%20spin

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 CONT

Dans la nature, les physiciens ont recensé deux grandes familles de particules : les fermions : particules ayant un spin demi-entier (1/2, 3/2, 5/2, etc.), les bosons : particules ayant un spin entier (0, 1, 2, etc.).  2, fiche 3, Français, - spin%20demi%2Dentier

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[...] il existe deux types de particules : - celles ayant un spin nul ou entier [...] - celles ayant un spin demi-entier (électron, proton, neutron, neutrino, méson^µ) qui obéissent à la statistique de Fermi-Dirac : ces particules sont appelées des fermions, il ne peut y avoir plus d'un fermion par sous-état (principe d'exclusion de Pauli)  3, fiche 3, Français, - spin%20demi%2Dentier

Fiche 3,  Justifications,  Espagnol