Nature's Third Cycle: A Story of Sunspots
Arnab Rai Choudhuri
Jan 2019 · Tantor Media Inc · Narrated by Sean Runnette
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10 hr 46 min
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About this audiobook
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 without electricity for many hours: a large explosion on the sun was discovered as the cause of this blackout. Such explosions occur above sunspots, dark features on the surface of the Sun that have been observed through telescopes since the time of Galileo. The number of sunspots has been found to wax and wane over a period of eleven years. Although this cycle was discovered less than two centuries ago, it is becoming increasingly important for us as human society becomes more dependent on technology. For nearly a century after its discovery, the cause of the sunspot cycle remained completely shrouded in mystery. The 1908 discovery of strong magnetic fields in sunspots made it clear that the eleven-year cycle is the magnetic cycle of the sun. It is only during the last few decades that major developments in plasma physics have at last given us the clue to the origins of the cycle and how the large explosions affecting the earth arise. Nature's Third Cycle discusses the fascinating science behind the sunspot cycle, and gives an insider's perspective of this cutting-edge scientific research from one of the leaders of the field.
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About the author
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.
Sean Runnette, a multiple AudioFile Earphones Award winner, has also produced several Audie Award-winning audiobooks. His film and television appearances include Two If by Sea, Copland, Sex and the City, Law & Order, Third Watch, and lots and lots of commercials.
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