9. Are the two main propositions of Sporer’s Law verified by the observations from 1913-1936?

9. Are the two main propositions of Sporer’s Law verified by the observations from 1913-1936?

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  • 1 decade ago
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    Of course. The Sun has an 11 year cycle, so Sporer's observations of the 1850s where certainly verified during 1913-1936?

    Sporer's (and Carrington's!) observations demonstrated (1) the differential rotation of the Sun's surface, as inferred from the apparent east-west motion of sunspots; (2) the gradual equator-ward drift of sunspots in the course of the sunspot cycle.

    http://en.wikipedia.org/wiki/File:800px-Sunspot_bu...

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