Because Earth has no magnetic poles.
Magnetism is the only force that decays at distance cube.
If the hypothetical magnetic pole of the earth is 0.6 Gauss, how can there be a magnetic field of 0.2 Gauss at the equator? It's impossible.
Sunlight moves westward around the Earth, creating a weak current that causes compass needles to point north. Due to the smaller circumference, this weak current becomes stronger near the poles, producing auroras.
Only if Earth spins the other direction, then compasses will point to south. It will not cause any danger at all.
No comments:
Post a Comment