Transcript for scene 34 of the video " Ice Age 2050s: Certainty 1" by Rolf Witzsche  

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Coincidence of the Maunder Minimum

It was discovered in much later times, that in the middle of the exceedingly cold period, almost no sunspots had occurred on the face of the sun. The lack of sunspots became known as the Maunder Minimum. It extended from 1645 to 1715.

For a single stretch of 30 years within this period, fewer than 50 sunspots were observed, as compared with 40,00050,000 spots in modern times. However, the coincidence of the Maunder Minimum with the cold period hadn't been recognized until the late 1800s. It had been regarded as unimportant earlier, just as the Ice Age phenomenon itself had been regarded as unimportant then. The recognition was beginning to dawn much later in the 1800s.

 

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Published by Cygni Communications Ltd. North Vancouver, BC, Canada - (C) in public domain - producer Rolf A. F. Witzsche