Jones, H. Spencer (Harold Spencer), 1890- · London E. Arnold & co. · leaf 162
ructure of thecorona is very complex ; it has no definite boundary and isusually symmetrical with respect neither to the centre of theSun nor to the Suns polar axis. Its general shape is found tovary with the Sun-spot cycle in a very marked way. At atime of Sun-spot maximum, it is compact, without… … Draivn IY ir. II. iresUy/ro)n pln>UsrapJis. (a) Solar Corona. iSS6 Aui;ust 29.
Astronomy
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