Solar Activity
Related to what’s heating the chromosphere and corona
- results in the solar wind
Related to magnetic (B) fields
- magnetic fields are ubiquitous in the Universe
- example: Earth creates its own B-field
- ~ 1 gauss cf. refrigerator magnet ~ 1000 gauss
- direction of field measured by compass
- demo with compass on overhead (bar magnet disturbs)
- currently magnetic N pole in Greenland (near N pole)
- B-fields always have 2 poles
- gravity and electric fields can have just 1 pole
- B-field lines always close
- demo with iron filings on projector
- very similar field patterrn shown in video