Sun's Magnetic Field Reversal Still A Scientific Mystery -- If you're confused about the sun's impending magnetic field flip, don't feel bad — scientists don't fully understand it, either. The sun's magnetic field will reverse its polarity three or four months from now, researchers say, just as it does every 11 years at the peak of the solar activity cycle. While solar physicists know enough about this strange phenomenon to predict when it will occur, its ultimate causes remain mysterious.
What are magnetic fields and how to see them. Great activity to do with children, all you need is a magnet, some iron filings and a piece of paper! #KS3 http://www.first4magnets.com/downloads/1377872820Activity-What-is-a-magnetic-field.pdf Get the materials here: http://www.first4magnets.com/rectangular-magnets-c35/educational-alnico-bar-magnets-iron-filings-set-science-education-p2515
Magnetic Yeast Only a few organisms can actively sense and utilize magnetic fields. Magnetotactic bacteria contain strings of iron-dense membrane-bound organelles filled with magnetic crystals called magnetosomes, which act like microscopic compasses. Bacteria that contain magnetosomes can detect the earth’s magnetic field, telling them which direction is up and helping them find oxygen closer to the surface of the water.