I watched the  video on  youtube https://www.youtube.com/watch?v=fD3P_l2sZFI

and I sent a feedback with a different view. We studied at high school the Fleming’s left hand rule for motors and it could very well explain what makes our planet spin and its speed varies on daily basis up and down by milliseconds since measurement began some 400 years ago. When electric current flows in a wire, and an external magnetic field is applied across that flow, the wire experiences a force perpendicular both to that field and to the direction of the electric current flow.  Inside Earth we have a similar phenomenon. First, let us identify the presence of electric current and anticipate the direction of its flow: As a result of Earth spin we observe bulged crust/ oceans. A bulged outer core follows the same principle although the outer core radius is half of the crust’s but the outer core density is five to six times that of the crust. Being an isotope, the inner core keeps emitting free electrons that flow in the high density viscous outer core. Such electrons elect to flow across the major axis of the bulged outer core i.e. the equatorial plane. Second, let us identify the presence of a permanent magnetic field and see if it has a fixed direction: The inner core is free to move, swivel and rotate and you could detect that by the continuous wandering of its magnetic poles. Examining the Coriolis effect, it is impossible that the magnetic field that we observe on the surface of Earth is generated out of the spiraling free electrons flowing in the outer core. In fact we should detect regions of south magnets at both geo poles. They go unnoticed in the Arctic circle since there is a already a strong south magnet field, but Scientists spotted patches of south magnetic field in Antarctica and they named them ‘Plasmoids’.. What if the inner core is the permanent magnet whose magnetic field is the prime one we clearly measure on the surface of Earth. Currently, the north magnet is pointing to Antarctica and the south magnet is pointing to the Arctic circle. The pulling of some of the magnetic field force lines by another magnet/ planet could lead to divergence of some of the field towards space instead of circulating the Earth from Antarctica to the Arctic, and to increase of wandering of the magnetic poles and of course increase in rate of Earthquakes. Third: as we go back to Fleming’s left hand rule, a Lorentz force is generated along the circumference where the outer core meets the inner mantle. The force is dependent on the product of the electric current strength, magnetic field force and the angle in between. Such a force applied consistently along the perimeter of the outer core/ inner mantle makes Earth spin. Assuming no change neither in magnetic field force nor electric current strength; a maximum force is generated when the electric current and magnetic field are at 90 degrees angle apart. If the angle grows less, the Lorentz force would grow less and Earth spin would slow down. Earth stops spinning when the electric current and magnetic field are flowing in the same direction. The spin could be reversed if the magnetic field force flips and the sun will accordingly rise from the west! Fourth,:at the beginning of the formation of planet Earth, and being an isotope, the inner core started emitting electrons but as time goes by, the emission of free electrons started to decay. This explains why Earth span faster at its early days. When the inner core runs out of its free electrons, the Lorentz force will be no more and Earth will stop spinning for good.