A
fluid dynamo ?
¥Larmor 1919
j
B
moving
conductor
(velocity u)
Induction
+
Lorentz
electrical
currents
magnetic
field
Dipolar
Magnetic field
(convection)
Mantle
Internal Core
(solid iron)
External Core
(liquid iron,
convection)
Spontaneous conversion :
mechanical
energy magnetic
energy
