Spark image

Magnetic fields

A scale of values on the Earth and throughout the Universe

(a) magnetic field due to the human heart    0.05 nT
(b) in the Galaxy    0.5 nT
(c) in the Crab nebula    0.01 mT
(d) Earth's magnetic field    18 mT
(e) Sun    20 mT at the surface
(f) surface of Jupiter    400 mT
(g) small permanent magnet in a lab    0.1 T
(h) large permanent magnet in a lab    1 T
(i) deflecting magnets in LEP (CERN Geneva)    0.5 T
(j) MRI scanner    2 T
(k) JET fusion reactor magnetic confinement 3.45 T
(l) superconducting solenoid    20 T
(m) white dwarfs 100 - 10 000 T
(n) near a pulsar (rotating neutron star) 100 000 000    T
(o) near a magnetar (a special type of neutron star)    10 000 million T
 
 
 
© Keith Gibbs 2007