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

Record number: 1, Textual support number: 1 CONT

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

Record number: 1, Textual support number: 1 PHR

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

Record number: 1, Textual support number: 2 PHR

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

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 DEF

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

Record number: 1, Textual support number: 1 OBS

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

Record number: 1, Textual support number: 1 DEF

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

Record number: 2, Textual support number: 1 DEF

Document detailing the disciplines and procedures to be followed to maintain an item of equipment, complete machine or system in good working order. It will detail periodic checks and replacement of parts, type or lubricant and protective processes and the period of time between each check. It will include instructions on how to locate faults, carry out repairs and the replacement of components. It may also include a detailed list of the components which go together to make the complete unit, and their reference numbers and quantity required to assist purchase of replacements as required.  1, fiche 2, Anglais, - maintenance%20manual

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 DEF

Document donnant en détail la procédure à suivre pour maintenir en bon état de marche tout ou partie d'une installation ou d'une machine. Il indiquera la fréquence des examens systématiques et des changements d'organes ainsi que leur nature, le type de lubrifiant et les mesures de protection à prendre. Il comprendra des instructions permettant de localiser des organes défaillants, d'entreprendre des réparations et des changements d'appareils. Il peut également comprendre une liste détaillée des appareils qui vont ensemble pour former l'installation complète ainsi que leurs numéros d'identification et leurs quantités afin de faciliter l'approvisionnement de pièces de rechange si nécessaire.  1, fiche 2, Français, - manuel%20d%27entretien

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Français

Fiche 3,  Justifications,  Espagnol