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Definition of sunspot cycle in English: sunspot cyclenoun Astronomy The recurring increase and decrease in the number of sunspots over a period averaging about eleven years. typically, around the end of each sunspot cycle, the sun's magnetic fields switch direction Example sentencesExamples - The solar wind is very closely linked to the 11 year solar sunspot cycle and solar flares.
- These events occur during the peak of the Sun's eleven-year sunspot cycle.
- Between the mid-sixteenth and seventeenth centuries, the sunspot cycle shut down, reducing solar output by a mere 0.25 percent.
- When the sun is more active at and around the sunspot cycle maximum, the solar wind tends to be stronger.
- A solar cycle later, the polarity switches back again, so that the complete magnetic cycle requires two sunspot cycles or 22 years.
- Sunspots have been observed for over two millennia, varying in number with a period of 11 years, and we have just experienced a maximum in the sunspot cycle.
Definition of sunspot cycle in US English: sunspot cyclenoun Astronomy The recurring increase and decrease in the number of sunspots over a period averaging about eleven years. typically, around the end of each sunspot cycle, the sun's magnetic fields switch direction Example sentencesExamples - The solar wind is very closely linked to the 11 year solar sunspot cycle and solar flares.
- When the sun is more active at and around the sunspot cycle maximum, the solar wind tends to be stronger.
- Between the mid-sixteenth and seventeenth centuries, the sunspot cycle shut down, reducing solar output by a mere 0.25 percent.
- A solar cycle later, the polarity switches back again, so that the complete magnetic cycle requires two sunspot cycles or 22 years.
- Sunspots have been observed for over two millennia, varying in number with a period of 11 years, and we have just experienced a maximum in the sunspot cycle.
- These events occur during the peak of the Sun's eleven-year sunspot cycle.
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