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aligned magnetic field meydân-e meqnâtisi-ye âxatidé Fr.: champ magnétique aligné A magnetic field whose lines of force are oriented along a particular direction or by a particular manner (axially, vertically; randomly, properly, etc.) → aligned; → magnetic field. |
azimuthal magnetic field meydân-e meqnâtisi-ye sugâni Fr.: champ magnétiquue azimutal In the → solar dynamo model, a magnetic field that points from east to west or vice-versa. |
circular magnetic field meydân-e meqnâtisi-ye dâyere-yi Fr.: champ magnétique circulaire A → magnetic field whose lines of force (→ line of force) run around the perimeter of the magnet. |
diamagnetic pâdmeqnâti Fr.: diamagnétique Relative to or characterized by → diamagnetism. → diamagnetism. |
dipolar magnetic field meydân-e meqnâtisi-ye dipoli, ~ ~ diqotbi Fr.: champ magnétique dipolaire A → magnetic field produced by a system possessing a net magnetic → dipole moment. |
electromagnetic barqâmeqnâti Fr.: électromagnétique Of or pertaining to electromagnetism or electromagnetic fields. |
electromagnetic counterpart hamtâ-ye barqâmeqnâti Fr.: contrpartie électromagnétique An → electromagnetic signal associated with the location on the sky and the time of a → gravitational wave event. The electromagnetic signal is predicted by models to be associated with the → merger of a → compact binary star system composed of two → neutron stars (NS) or a neutron star and a → black hole (BH). Accordingly, the gravitational waves are accompanied by a short-duration → gamma-ray burst (GRB) powered by the → accretion of material that remains in a → centrifugally supported → torus around the BH following the merger. NS-NS/BH-NS mergers are also predicted to be accompanied by a more isotropic counterpart, commonly known as a → kilonova. Kilonovae are day to week-long thermal, → supernova-like → transients, and are powered by the → radioactive decay of heavy, neutron-rich elements synthesized by the → r-process in the expanding merger ejecta (Li and Paczynski 1998). The first detection of an electromagnetic counterpart to gravitational waves belongs to → GW170817. → electromagnetic; → counterpart. |
electromagnetic field meydân-e barqâmeqnâti Fr.: champ électromagnétique A region of space consisting of coupled electric and magnetic lines of force at each point, generated by time-varying currents and accelerated charges. → electromagnetic; → field. |
electromagnetic force niru-ye barqâmeqnâti Fr.: force électromagnétique The fundamental force that is associated with electric and magnetic fields. One of the four fundamental forces of nature, it is carried by photons. → electromagnetic; → force. |
electromagnetic induction darhâzeš-e barqâmeqnâti Fr.: induction électromagnétique The production of an → electromotive force in a circuit caused by a variation in the magnetic flux through the circuit. If this variation is produced by a change in the current flowing in the circuit itself, it is called → self-induction. If due to the variation in a current in some other circuit, it is called mutual induction. See also → Faraday's law of induction. → electromagnetic; → induction. |
electromagnetic potential tavand-e barqâmeqnâti Fr.: potentiel électromagnétique The combination of both → electric scalar potential and → magnetic vector potential. → electromagnetic; → potential. |
electromagnetic radiation tâbeš-e barqâmeqnâti Fr.: rayonnement électromagnétique Radiation propagating in the form of an advancing wave in electric and magnetic fields. It includes radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays. → electromagnetic; → radiation. |
electromagnetic signal nešâl-e barqâmeqnâti Fr.: signal électromagnétique Information transmitted by means of a modulated current or an electromagnetic wave and received by telephone, radio, television, etc. → electromagnetic; → signal. |
electromagnetic spectrum binâb-e barqâmeqnâti Fr.: spectre électromagnétique The range of frequencies over which electromagnetic waves are propagated. → electromagnetic radiation. → electromagnetic; → spectrum. |
electromagnetic theory negare-ye barqâmeqnâti Fr.: théorie électromagnétique The description of combined electric and magnetic fields mainly by → Maxwell's equations. Same as → electromagnetism. → electromagnetic; → theory. |
electromagnetic theory of light negare-ye barqâmeqnâti-ye nur Fr.: théorie électromagnétique de la lumière The theory describing light as a wave phenomenon resulting from the combination of two electric and magnetic fields vibrating transversely and mutually at right angles. → electromagnetic radiation; → electromagnetic wave; → Maxwell's equations. → electromagnetic; → theory; → light. |
electromagnetic wave mowj-e barqâmeqnâti Fr.: onde électromagnétique A wave produced by oscillation or acceleration of an electric charge. → electromagnetic radiation. → electromagnetic; → wave. |
ferromagnetic âhanmeqnâti Fr.: ferromagnétique Relative to or characterized by → ferromagnetism. |
force-free magnetic field meydân-meqnâtisi-ye bi-niru Fr.: champ magnétique sans force The condition in a plasma when the → Lorentz force is zero, that is when the electric current flows along the magnetic field. Force-free magnetic fields are encountered in astrophysical plasmas with negligible gas pressure. The solar corona is the best available example of such fields in action in a plasma. |
fossil magnetic field meydân-e meqnâtisi-ye sangvâré, ~ ~ sangvâre-yi Fr.: champ magnétique fossile In a physical system, the → magnetic field belonging to an earlier magnetic process or event. A fossil magnetic field may be a vanished one or exist in relic forms. As an example, the solar magnetic field, which was present during the formation of the Sun, has disappeared over the last 4.6 billions years. |
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