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Originally posted by randomname
maybe buy a new compass and compare them. it could be your compass is on it's last legs.
Originally posted by onecraftydude
The people who need convincing are usually too dense to understand the implications anyway and not worth the effort.
Using the equations of magnetohydrodynamics, a branch of physics dealing with conducting fluids and magnetic fields, Glatzmaier and colleague Paul Roberts have created a supercomputer model of Earth's interior. Their software heats the inner core, stirs the metallic ocean above it, then calculates the resulting magnetic field. They run their code for hundreds of thousands of simulated years and watch what happens.
What they see mimics the real Earth: The magnetic field waxes and wanes, poles drift and, occasionally, flip. Change is normal, they've learned. And no wonder. The source of the field, the outer core, is itself seething, swirling, turbulent. "It's chaotic down there," notes Glatzmaier. The changes we detect on our planet's surface are a sign of that inner chaos.
They've also learned what happens during a magnetic flip. Reversals take a few thousand years to complete, and during that time--contrary to popular belief--the magnetic field does not vanish. "It just gets more complicated," says Glatzmaier. Magnetic lines of force near Earth's surface become twisted and tangled, and magnetic poles pop up in unaccustomed places. A south magnetic pole might emerge over Africa, for instance, or a north pole over Tahiti. Weird. But it's still a planetary magnetic field, and it still protects us from space radiation and solar storms.
Originally posted by onecraftydude
As far as "True North" and how far off your compass is, that will not be necessary to prove because there is no landmark or star that can be used in a video to prove true north. You might back up your north reading with a gps reading or compass app, but I would just forget about trying to convince anyone of your evidence. The people who need convincing are usually too dense to understand the implications anyway and not worth the effort.