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The Maunder Minimum, also known as the "prolonged sunspot minimum", was a period around 1645 to 1715 during which sunspots became exceedingly rare. During a 28-year period (1672–1699) within the minimum, observations revealed fewer than 50 sunspots. This contrasts with the typical 40,000–50,000 sunspots seen in modern times over a similar timespan.
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References
- ↑ Eddy, John A. (June 1976). "The Maunder Minimum". Science . 192 (4245): 1189–1202. Bibcode:1976Sci...192.1189E. doi:10.1126/science.192.4245.1189. JSTOR 17425839. PMID 17771739. S2CID 33896851.
- ↑ "The Galileo Project". Archived from the original on June 23, 2004. Retrieved September 14, 2007.
- ↑ Martensen, Robert L. (2004). "Whistler, Daniel (1618/19–1684)" . Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/29215 . Retrieved January 26, 2012.(Subscription or UK public library membership required.)
- ↑ "Sir Robert Dudley". Encyclopædia Britannica . 2009. Retrieved October 15, 2009.