A tube-like space in which there is a strong magnetic field. Small flux tubes at the surface of the Sun, with a diameter of less than about 300 km, form filigrees and plages and may appear bright. Bigger flux tubes, up to about 2,500 km diameter, appear dark and are called pores or sunspots.
Related category SOLAR TOPICS
Home • About • Copyright © The Worlds of David Darling • Encyclopedia of Alternative Energy • Contact