Dramaqueen5722 Dramaqueen5722

08-08-2019
Physics

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Summarize the evidence indicating that over several hundreds of years or more there have been variations in the level of the solar activity.

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Karabo99 Karabo99

14-08-2019

Answer:

Counts of sunspots infer the overall magnetic field changes, which correlate with the level of the magnitude of the solar dynamo and hence solar activity. Astronomers have reliable data going back to 1750.

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