Arnab Rai Choudhuri is a Professor of Physics at the Indian Institute of Science. He was one of the originators of the flux transport dynamo model, the currently favored theoretical model of the eleven-year sunspot cycle.
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The cycle of day and night and the cycle of seasons are two familiar natural cycles around which many human activities are organized. But is there a third natural cycle of importance for us humans? On 13 March 1989, six million people in Canada went witho... SEE MORE