Scientists in Britain have been keeping an eye on where the Earth's magnetic north pole is. It's not fixed like the geographical North Pole; instead, it's like a wandering star. Recently, they found ...

Earth's magnetic field is generated by mixing of the molten iron in the fluid outer core, driven by changes in density as as the inner core slowly solidifies, which creates a dynamo effect.

which keeps the liquid metal moving through the magnetic field. The so-called Coriolis force also plays a role in sustaining the geomagnetic dynamo. Our planet's spinning motion causes the moving ...

BEIJING -- A new analysis of samples collected by China's Chang'e 5 mission has revealed that the moon possessed a weak yet still running dynamo magnetic field approximately 2 billion years ago.

increasing the rate of rotation increasing the strength of the magnetic field increasing the number of turns on the coil The diagram shows four different positions of the coil in a dynamo ...