Just a thought. If the North pole area 'warms up' will it lose its magnetism?
Poster
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Just a thought. If the North pole area 'warms up' will it lose its magnetism?
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I thought magnetism came from the outer core, the liquid iron part that's spinning around pretty fast
magnetism rocks
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Iron loses its magnetism at around 1000c.Originally Posted by Barbarossa
I thought magnetism came from the outer core, the liquid iron part that's spinning around pretty fast
magnetism rocks
The reason the North pole is magnetic is because the metal core has cooled down.
Last edited by bigboab; 01-18-2007 at 03:21 PM.
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The spinning of the molten core causes an electric current, and the electric current produces the magnetic field.Iron loses its magnetism at around 1000c.I thought magnetism came from the outer core, the liquid iron part that's spinning around pretty fast
magnetism rocks
The reason the North pole is magnetic is because the metal core has cooled down.
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I am not disagreeing. I was pointing out that the molten core of the earth can not be magnetic because the temperature is too high. However the outer surface of the core at the 'poles' has cooled down sufficient to become magnetic.The spinning of the molten core causes an electric current, and the electric current produces the magnetic field.
Iron loses its magnetism at around 1000c.
The reason the North pole is magnetic is because the metal core has cooled down.
Unless things have changed since I was at school.
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The Currie point in iron is much lower than 1000c nearer to 800c, the earths core is not noticeably cooler at the poles. Iron melts at about 1140-1200°C. So global warming should not have any effect on the earths magnetic field.I am not disagreeing. I was pointing out that the molten core of the earth can not be magnetic because the temperature is too high. However the outer surface of the core at the 'poles' has cooled down sufficient to become magnetic.
Unless things have changed since I was at school.
Last edited by odin22; 01-18-2007 at 08:17 PM.
Frog Shoulder
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However it does "flip" poles every so often. What the fuck's that all about.The Currie point in iron is much lower than 1000c nearer to 800c, the earths core is not noticeably cooler at the poles. Iron melts at about 1140-1200°C. So global warming should not have any effect on the earths magnetic field.
I am not disagreeing. I was pointing out that the molten core of the earth can not be magnetic because the temperature is too high. However the outer surface of the core at the 'poles' has cooled down sufficient to become magnetic.
Unless things have changed since I was at school.
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Yes but thats nothing to do with global warming, they only have theories as to way this happens.However it does "flip" poles every so often. What the fuck's that all about.
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Yes but thats nothing to do with global warming, they only have theories as to way this happens.
Are you sure of that statement? There are trains of thought that the 'flipping' is causing global warming. A pole in Hawaii and a pole in South Africa are possibilities.
http://www.halfpasthuman.com/HPHNPOLE.htm
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They don't know why it flips.
The poles actually wander around too, and they are not necessarily diametrically opposite one another on the Earth's surface.
What the fuck's THAT all about
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