Sun

Authored by: William Livingston

Encyclopedia of Optical and Photonic Engineering

Print publication date:  September  2015
Online publication date:  September  2015

Print ISBN: 9781439850978
eBook ISBN: 9781351247184
Adobe ISBN:

10.1081/E-EOE2-120009573

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Abstract

This entry discusses some of the underlying physical processes that cause the Sun to appear and behave as it does. Magnetism makes the Sun interesting. Stored magnetic fields are buoyed to the surface from the interior, manifestly as sunspots, and then, the fields are pushed about by powerful convection forces, often to simply submerge and disappear, sometimes to be twisted into unstable flare-producing configurations, and sometimes to be ejected into the heliosphere and ultimately reaching the Earth.

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