Wednesday, January 3, 2024

Why Earth has no magnetic field?

Real magnetic field is inversely proportional to the distance cubed. But the imaginary Earth's magnetic field measured near the poles is 0.65 gauss and near the equator is 0.2 gauss.

A compass floating on water would point toward the imaginary Earth's magnetic poles, but would not move toward them.

A compass floating on water in a real magnetic field will move and point toward the magnetic poles. 

The fact is sun's rays move westward around the Earth, creating a weak electric current that constantly moves around the Earth. That induces compasses point north also creates polar lights at night. 

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