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SUMMARY:The Magnetic Sun - Professor Michael Proctor
DTSTART:20171031T194500Z
DTEND:20171031T213000Z
UID:TALK94327@talks.cam.ac.uk
CONTACT:Siyang Fu
DESCRIPTION:Our Sun\, and most other stars\, is not just a ball pf plasma 
 in turbulent motion\, but is permeated by magnetic fields on a wide variet
 y of scales. While everyone is familiar with the atmospheric manifestation
 s of magnetic activity\, for example solar prominences and the corona\, th
 ese are in fact reflections of the very complex field structures deeper do
 wn. The most important feature of these structures is the 22-year sunspot 
 cycle\, which is believed to be driven by electromagnetic induction due to
  the turbulent motions of the plasma. The cycle has been observed for hund
 reds of years but is still not satisfactorily explained. I will discus the
  nature of the cycle\, the theories for its existence\, and other aspects 
 of solar magnetic activity\, including some historical commentary.
LOCATION:Wolfson Lecture Theatre\, Department of Chemistry
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