Labels:amusement park | apron | bannister | crt screen | lamp | monitor | plant | seat | sky | stairs | tree | windowpane OCR: YN MO generator OT electrical or magnetic field. Magnetic dynamos are believed to be the source of magnetic fields in the Earth and other planets with metallic cores. The hypothesis that a metal or meta Ilic hydrogen moves in the interior of planet by convection. ua magnetic field already exists (even if it very small) the motion of the metal causes electrical currents These currents create further magnetic fields, which allow more currents and so on. This feedback loop can build very small magnetic fielc into field DYNAMO large fiela
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