Hale cycle


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Hale cycle

[′hāl ‚sī·kəl]
(astronomy)
The variation of the sun's magnetic field over a period of approximately 22 years, during which the field reverses and is restored to its original polarity; one such cycle comprises two successive sunspot cycles.
References in periodicals archive ?
The Hale cycle refers to the hemispheric magnetic polarity variation over two consecutive sunspot cycles.