The Sun by Philip Judge

Author:Philip Judge
Language: eng
Format: epub
ISBN: 9780192569011
Publisher: OUP Oxford
Published: 2020-03-20T16:00:00+00:00

• systematic spot emergence between -30 and 30 degrees latitude, within the ‘wings of the butterfly’ (Figure 18);

• leading and following spots are of opposite signs in each hemisphere (Hale’s polarity law);

• steady motion of diffuse magnetic fields from spots towards the poles, over a year or so;

• ‘cancellation’, or reversal of sign of pre-existing polar fields, following the poleward motion of follower sunspots emerging systematically closer to the poles (‘Joy’s law’);

• after eleven years, the entire pattern is repeated with polarities now all reversed.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.