Strong Magnetic Fields
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Earth: 5 x 10^-5 T
Sun: 5 x 10^-3 T
nasa web site ref: http://science.nasa.gov/headlines/y2001/ast15feb_1.htm
Refrigerator magnet: 5 x 10^-3 T
Neodynium rare-earth magnet: 1 T
Typical Hospital MRI: 2-3 T
Function MRI: 4 T
Experimental Human MRI: 8.4 T [REF]
Experimental Animal MRI: 11 - 20 T [REF]
Largest continuous man-made magnet: 45 T [Ref FSU magnet lab}
Neutron Stars: 10^8 T [Kouveliotou]
Fields above 10^5 T squeeze elecron orbitals in to cigar shapes
Magnetars: 10^11 T [Kouveliotou]
Upper Limit: 10^13 T "No known objects in the universe can generate and maintain fields stronger than this level." [Kouveliotou]
link to Duncan's website: solomon.as.utexas.edu/magnetar.html