Earth's Mag Field Could Flip

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AntennaGuy
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Earth's Mag Field Could Flip

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Post by AntennaGuy »

So, according to this article, the Earth's magnetic field flipped relatively recently (on a geological time-scale, that is) and it might be headed that way again: https://www.space.com/earth-magnetic-fl ... -years-ago . This is supposed to be bad (but not dinosaur-level bad).

So... I did a quick back-of-the-envelope calculation of how much current (and how much copper, and how much power) we would need to drive a wire loop wrapped around the whole planet, to force the Earth's magnetic field back to ~normal. Dude! You don't want to see those kind of numbers. And... let's just put it this way: we probably won't be ready to do that this century. But in 2 or 3 hundred more years (assuming technology advancements comparable to the last 200-300 years)!, then... maybe! But it might be cheaper to simply retire to our vast underground cities instead.
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Ylem
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Re: Earth's Mag Field Could Flip

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Post by Ylem »

AntennaGuy wrote: Tue Feb 23, 2021 3:22 am So, according to this article, the Earth's magnetic field flipped relatively recently (on a geological time-scale, that is) and it might be headed that way again: https://www.space.com/earth-magnetic-fl ... -years-ago . This is supposed to be bad (but not dinosaur-level bad).

So... I did a quick back-of-the-envelope calculation of how much current (and how much copper, and how much power) we would need to drive a wire loop wrapped around the whole planet, to force the Earth's magnetic field back to ~normal. Dude! You don't want to see those kind of numbers. And... let's just put it this way: we probably won't be ready to do that this century. But in 2 or 3 hundred more years (assuming technology advancements comparable to the last 200-300 years)!, then... maybe! But it might be cheaper to simply retire to our vast underground cities instead.
😆
I can see this big 'ole copper loop now 😆

I have enough problems trying to receive longwave signals now 😆
Thanks for the laugh 🤣
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Chich
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Re: Earth's Mag Field Could Flip

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Post by Chich »

Does not look like it would be a good thing for people who enjoy cat videos on their phones. :)
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