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/sci/ - Science & Math

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9362031 No.9362031 [Reply] [Original]

Hey /sci/, quick question, what is more important when determining the strength of a planets magnetic field, rate of rotation or density?

It's density right?

>> No.9362055

>>9362031
density, but more importantly is the amount of ferromagnetic material unless you have some kind of current behaviour

>> No.9362074

>>9362031
No.
Jupiter has a heck of a magnetic field but low density.
But it spins fast and there is, presumably, a core of _something_ conductive deep down. Either something like iron or metallic hydrogen.

Venus is nearly as dense as the Earth but it spins slowly. Mercury is denser than Earth but only has about 1% our field because of slow spin.
Mars has a weak field though it spins about as fast as Earth. But it cooled faster and it's core probably "froze", so there's little dynamo effect.
It takes BOTH a conductor and spin to generate a field.

>> No.9362634

Neither, you moron.

>> No.9362695

>>9362055
>>9362074
>>9362634
mother fuckers lying and getting me pissed