Earth's Drafty Magnetic Field
a: Magnetic Field ~
b: a house with a window stuck open during a storm
What: "We've discovered that our magnetic shield is drafty, like a house with a window stuck open during a storm," says Harald Frey of the University of California, Berkeley, lead author of a paper on this research published Dec. 4 in Nature. "The house deflects most of the storm, but the couch is ruined. Similarly, our magnetic shield takes the brunt of space storms, but some energy slips through its cracks, sometimes enough to cause problems with satellites, radio communication, and power systems."
Writer: Harald Frey
Date: Jun 4 2011 2:47 AM
Magnetic Field As Rubber Band
a: Magnetic field ~
b: a rubber band
What: "Remember, a magnetic field is like a rubber band. It forms a complete loop. It comes out of the North pole end of a magnet, loops around in the air or other things, and goes back into the South pole of the magnet."
Writer: Not Stated
Date: Jan 21 2012 12:07 PM
Magnetism/electric Field: Fraternal Twins
a: The magnetic field ~
b: a the magnetic field of the electric field
What: "The magnetic field is like a the magnetic field of the electric field - closely related but not quite the same."
A nice discussion of the magnetic field, on a website for students in their first college level physics series.
Writer: Art West
Where: Reference Link Has Evaporated
Date: Jan 21 2012 12:13 PM
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