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MERIDIEN MAGNETIQUE [2 records]

Record 1 2016-02-29

English

Subject field(s)
  • Electromagnetism
  • Atomic Physics
DEF

Magnetic field in a toroidal plasma confinement system in which the field lines form a set of nested contours perpendicular to the major circumference of the torus.

CONT

In this scheme [the Tokamak fusion reactor], an electric current is induced along the plasma column, flowing the long way around the torus. The associated poloidal magnetic field (which has lines of force going around the minor cross section of the torus) gives rise to helical field lines, which form a set of nested magnetic surfaces.

OBS

"Poloidal magnetic field" has been standardized by ISO.

French

Domaine(s)
  • Électromagnétisme
  • Physique atomique
DEF

Dans un système à confinement toroïdal de plasma, champ magnétique dont les lignes de force forment un ensemble de contours emboîtés perpendiculaires à la circonférence principale du tore.

CONT

Tokamak. [. ..] Appareil conçu pour le confinement d'un plasma à l'intérieur d'une chambre torique en utilisant la combinaison de deux champs magnétiques: un champ magnétique principal axial [...] et un champ magnétique secondaire transversal, créé par un courant électrique intense parcourant l'anneau de plasma.

OBS

"Champ magnétique poloïdal" et "champ magnétique méridien" ont été normalisés par l'ISO.

Key term(s)
  • champ secondaire transversal
  • champ magnétique transversal
  • champ magnétique vertical
  • champ poloïdal

Spanish

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Record 2 2002-11-27

English

Subject field(s)
  • The Earth (Astronomy)
  • Magnetism
DEF

A line on the earth's surface approximating a great circle passing through the north and south magnetic poles.

CONT

Magnetic meridians are meridians that are parallel to the directions taken by freely moving magnetized needles, as in a compass.

French

Domaine(s)
  • Terre (Astronomie)
  • Magnétisme
DEF

Plan vertical, défini par la verticale du lieu et la direction du champ magnétique terrestre en ce lieu, donné par la position de l'aiguille aimantée.

Spanish

Save record 2

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