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relative sunspot number |
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relative sunspot number [′rel·əd·iv ′sən‚spät ‚nəm·bər] (astronomy) A measure of sunspot activity, computed from the formulaR=k(10g+f), whereRis the relative sunspot number,fthe number of individual spots,gthe number of groups of spots, andka factor that varies with the observer (his or her personal equation), the seeing, and the observatory (location and instrumentation). Also known as sunspot number; sunspot relative number; Wolf number; Wolf-Wolfer number; Zurich number. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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