Sunspot Cycle

   A somewhat regular eleven year cycle where the frequency of sunspots goes from almost none, to many.

The writer's dictionary of science fiction, fantasy, horror and mythology. 2014.

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  • sunspot cycle — noun or sunspot period : the time between maxima in the varying numbers of sunspots averaging about 11 years but sometimes being many years shorter or longer * * * Astron. the cycle, averaging in duration slightly more than 11 years, in which the …   Useful english dictionary

  • sunspot cycle — Astron. the cycle, averaging in duration slightly more than 11 years, in which the frequency of sunspots varies from a maximum to a minimum and back to a maximum again. Cf. solar cycle. * * * …   Universalium

  • sunspot maximum — sunspot maximum, the period during the sunspot cycle in which sunspots are most frequent …   Useful english dictionary

  • sunspot minimum — sunspot minimum, the period during the sunspot cycle in which sunspots are least frequent …   Useful english dictionary

  • Sunspot — A sunspot is a region on the Sun s surface (photosphere) that is marked by intense magnetic activity, which inhibits convection, forming areas of reduced surface temperature. They can be visible from Earth without the aid of a telescope. Although …   Wikipedia

  • sunspot — /ˈsʌnspɒt / (say sunspot) noun 1. one of the relatively dark patches which appear periodically on the surface of the sun, and which have a certain effect on terrestrial magnetism and other terrestrial phenomena. Their appearance is spasmodic but… …   Australian English dictionary

  • sunspot period — noun see sunspot cycle …   Useful english dictionary

  • Cycle Solaire — Pour les articles homonymes, voir Cycle solaire (homonymie). Un cycle solaire est une période pendant laquelle l activité du Soleil varie en reproduisant les mêmes phénomènes que pendant la période de même durée précédente. Vue de la Terre, l… …   Wikipédia en Français

  • Cycle de Schwabe — Cycle solaire Pour les articles homonymes, voir Cycle solaire (homonymie). Un cycle solaire est une période pendant laquelle l activité du Soleil varie en reproduisant les mêmes phénomènes que pendant la période de même durée précédente. Vue de… …   Wikipédia en Français

  • sunspot — sunspotted, adj. sunspottedness, n. /sun spot /, n. one of the relatively dark patches that appear periodically on the surface of the sun and affect terrestrial magnetism and certain other terrestrial phenomena. [1805 15; SUN + SPOT] * * * Cooler …   Universalium

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