The geomagnetism tag has no wiki summary.
5
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2answers
101 views
What is known about the Magnetic North Pole's location before 1800?
I was recently startled to find that the Earth's North Magnetic Pole is moving at upwards of 40 km per year, with an additional ~80 km daily elliptical drift about its mean position due to variations ...
2
votes
3answers
450 views
Shielding magnetic field without mu-metal
I need to shield my device from magnetic interference, including earth magnetic field (if you move device around, it might be enough to cause slight currents i guess) and magnetic field caused by ...
3
votes
2answers
93 views
Earth's core electric charge
Forgive my limited knowledge, but the Earth's magnetic field is created by the conductive liquid in the core and to the best I can tell organizing itself (which means separating charges?). Would this ...
1
vote
0answers
34 views
Interaction of geomagnetism on free falling coil
Take the Earth, or a similarly large body with an Electromagnetic field. For now - expect atmosphere.
Then take a much smaller object - say the size of bus, containing a coil with many windings.
If ...
0
votes
2answers
74 views
Confused about magnetic and geographic north
I'm slightly confused about the "north-seeking" pole of a magnet: does it point towards magnetic north, or is it towards geographic north?
I ask because I've been finding different explanations in ...
1
vote
1answer
57 views
What geological properties of the earth could we deduce by measuring magnetic field strength and direction?
I wonder if it is of any use for a geophysicist, if we measure the magnetic field strength and direction of the earth.
Could we make valid statements about the composition of the the earth, earth ...
0
votes
0answers
92 views
Angle of Inclination
How do I calculate the angle of Inclination for a specific location on the Earth? The only Information I've got is the longitude and latitude in degree, so I do not understand. I now ...
9
votes
1answer
2k views
What is the source of Earth's magnetic field?
I saw on Discovery channel that the source of Earth's magnetic field is the molten iron and metals in the earth's core. The spinning of these liquid metals produces the same effect as electric current ...
1
vote
1answer
63 views
Rock chips showing magnetic property?
If i am placing two rock(stone) chips closer with a wider area of contact and rotating another rock stone around these two chips(having close contact) for some time (around 30 sec) and try to separate ...
3
votes
1answer
994 views
superconductor levitating in earth's magnetic field? [duplicate]
Possible Duplicate:
Can superconducting magnets fly (or repel the earth's core)?
I've seen superconductors levitating on magnets. But is it possible for superconductors to levitate on ...
