Assertion: sunspot's field | /r/CapableOf | make complete flip
Facets:
value: in polarity
type: LOCATION
value: from north
type: LOCATION
Source sentences:
text: Although one cycle lasts about 11 years and we are currently at the beginning of Cycle 23 since records were kept, A full magnetic activity cycle takes 22 years for the magnetic field of the Sun to make a complete flip in polarity from North to South and back again in each hemisphere.