The period from 1654 to 1714 when it was believed that there were no sunspots. It is now thought that there were some sunspots during that time but less than the numbers counted after 1800.
A period from 1645 to 1715, when the average number of sunspots was unusually low. It was investigated by E. W. Maunder, and corresponds to a time called the "Little Ice Age", when temperatures were unusually cold. ( go to first use in the text)
virtual disappearance of sunspots in the period 1645 to 1715.
During one seventy-five year period, now called the Maunder Minimum (1645-1715), sunspot activity virtually ceased, and temperatures fell enough to cause a "Little Ice Age" of severely cold weather across the northern hemisphere of Earth. During the 11th and 12th centuries, there was also a large warming coincident with enhanced solar activity.
The interval from 1645 to 1715 when solar activity was very low.
period of solar minimum from A.D. 1645 to 1715, during which sunspots and auroras were much less common and the 11-year sunspot cycle did not exist.
A period of less numerous sunspots and other solar activity from 1645-1715.
Period from 1645 to 1715 during which the sun had very little sunspot activity.
See sunspot minimum, solar minimum.
The Maunder Minimum is the name given to the period roughly from 1645 to 1715 A.D., when sunspots became exceedingly rare, as noted by solar observers of the time. It is named after the later solar astronomer E.W. Maunder who discovered the dearth of sunspots during that period by studying records from those years.
