The iron core is molten and is not spinning relative to the rest of the Earth. It's just sitting there like everything else. The magnetic field is generated by currents and eddies in the liquid iron.
The field is far too weak to use for direct power generation. If you want to harness the power of the molten iron core directly you're going to have to figure out a few things that have never been done before, like:
- How to drill down 1,800 miles to reach the core. So far, the deepest hole ever drilled took 5 years and reached a depth of a little over 4 miles.
- How to engineer equipment that will last in temperatures around 8,000°F and pressures of several million atmospheres.
- How to install the equipment.
Molten iron core
Pure conjecture.
Pure conjecture.
Well, one that has a lot of physical evidence behind it, unlike other conjecture.
The article is pure speculation. No actual science behind the core theory other than it doesn't allow one type of seismic wave to pass through and slows anther type, therefore density higher than mantel. And then, suggests it must be liquid iron because of our magnetic field.
When heat is added to a magnet it stops being magnetized.
If the earth has a molten core it shouldnt be magnetic.
What am I missing here?
The Curie temperature that affects magnetic fields is a thing, but it doesn't apply to how the Earth's magnetic field is created. You are thinking of the effect as it applies to a permanent magnet, which is to say a material that has been made magnetic through natural or artificial means. The magnetic field in say a neodymium magnet is not self generating. It was applied to the neodymium ceramic material by an electromagnet at the time of manufacture. The material aligns its magnetic domains to the field created by the electromagnet and retains that alignment unless heated beyond the material's Curie point where the domains will return to a random alignment. You can basically magnetize and demagnetize magnets with a strong electromagnet and heat.
The magnetic field of the Earth is not created by simple domain alignment in a solid material. The interactions of the materials of the core layers, mainly iron and nickel, cause electromagnetic fields by Eddy Currents forming in those regions. It is an electromagnetic process by which the Eddy currents give rise to the magnetic field just as an electric current flowing through a wire creates a magnetic field around it.. The Earth is more akin to an electromagnet than a permanent magnet. You can't demagnetize an electromagnet by the application of heat in the same way as a permanent magnet could be. They are just two different kinds of magnets and only one is affected by the Curie temperature. Does that make sense now?
Makes sense, yes. Thanks
Would you know anything about scaler waves? I heard a guy Braden and a Heavysides talking about them years ago. Cant seem to wrap my head around how to generate them, where they are found or what use they have.
Nothing and your correct. Motley core of iron just be a stupid hot ball of lava. Iron must be solid to be magnetic and magnetics are easy to change polar with heat or bigger magnets.
The iron isn't a "magnet," it's a conductor. Processes in the core induce electrical currents, which generate a magnetic field. The Earth is an electromagnet.
The Earth is an electromagnet.
Is that what tesla was trying to tap into or work with?
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