force-free magnetic field — An Etymological Dictionary of Astronomy and Astrophysics

force-free magnetic field

میدان ِ مغناتیسی ِ بی‌نیرو

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.

See also: → force; → free; → magnetic; → field.

An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک