An Etymological Dictionary of Astronomy and Astrophysics

English-French-Persian

فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک



bald patch
  پچ ِ تاس، تکه‌ی ِ ~  
pac-e tâs, tekke-ye ~
Fr.: zone chauve  

The location on the surface of the → Sun where → coronal  → magnetic field lines become tangent to the → photosphere. Bald patches play an important role in solar → magnetohydrodynamics.

See also:bald, such called because of visual reference to a haircut (Titov et al. 1993, A&A 276, 564); → patch.