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Size of electromagnet needed to replicate Earth's magnetic field
Can superconducting magnets fly (or repel the earth's core)?How to size an electromagnetWhy is the magnetic field stronger at the edges of a bar magnet?Can you create a powerful magnetic field out of confined circulating electrons only?Repelling a weak permanent magnet with an electromagnetGraphene - Can it produce a magnetic field?Feasiblity of a long spinning top using an electromagnet to pull on Earth's magnetic fieldHow strong is Earth's magnetic field in space?Why doesn't a permanent magnetic field not make a florescent light illuminate like an electromagnet field?Mini rail gun to build at home
$begingroup$
I guess the title says it all. How big of an electromagnet would you need to generate a magnetic field the same as Earth's? Like, what kind of amperes are we talking here? (Assuming a hypothetical superconducting magnet, of course.)
electromagnetism magnetic-fields
asked 5 hours ago
Lajos NagyLajos Nagy
1683
$endgroup$
add a comment |
$begingroup$
I guess the title says it all. How big of an electromagnet would you need to generate a magnetic field the same as Earth's? Like, what kind of amperes are we talking here? (Assuming a hypothetical superconducting magnet, of course.)
electromagnetism magnetic-fields
asked 5 hours ago
Lajos NagyLajos Nagy
1683
$endgroup$
add a comment |
$begingroup$
I guess the title says it all. How big of an electromagnet would you need to generate a magnetic field the same as Earth's? Like, what kind of amperes are we talking here? (Assuming a hypothetical superconducting magnet, of course.)
electromagnetism magnetic-fields
asked 5 hours ago
Lajos NagyLajos Nagy
1683
$endgroup$
I guess the title says it all. How big of an electromagnet would you need to generate a magnetic field the same as Earth's? Like, what kind of amperes are we talking here? (Assuming a hypothetical superconducting magnet, of course.)
electromagnetism magnetic-fields
electromagnetism magnetic-fields
asked 5 hours ago
Lajos NagyLajos Nagy
1683
asked 5 hours ago
Lajos NagyLajos Nagy
1683
asked 5 hours ago
Lajos NagyLajos Nagy
1683
asked 5 hours ago
Lajos NagyLajos Nagy
1683
asked 5 hours ago
Lajos NagyLajos Nagy
1683
1683
add a comment |
add a comment |
1 Answer
1
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$begingroup$
You are in luck, since Osamu Motojima and Nagato Yanagi have already calculated it for you in their report Feasibility of Artificial Geomagnetic Field Generation by a Superconducting Ring Network. They conclude that producing 10% of the current field is feasible using "12 latitudinal high-temperature superconducting rings, each carrying 6.4 MA current with a modest 1 GW of power requirement".
(The motivation for the report is the concern about the consequences of Earth losing its field during a geomagnetic reversal, but it doesn't look like those are particularly bad.)
answered 3 hours ago
Anders SandbergAnders Sandberg
10.4k21531
$endgroup$
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
You are in luck, since Osamu Motojima and Nagato Yanagi have already calculated it for you in their report Feasibility of Artificial Geomagnetic Field Generation by a Superconducting Ring Network. They conclude that producing 10% of the current field is feasible using "12 latitudinal high-temperature superconducting rings, each carrying 6.4 MA current with a modest 1 GW of power requirement".
(The motivation for the report is the concern about the consequences of Earth losing its field during a geomagnetic reversal, but it doesn't look like those are particularly bad.)
answered 3 hours ago
Anders SandbergAnders Sandberg
10.4k21531
$endgroup$
add a comment |
$begingroup$
You are in luck, since Osamu Motojima and Nagato Yanagi have already calculated it for you in their report Feasibility of Artificial Geomagnetic Field Generation by a Superconducting Ring Network. They conclude that producing 10% of the current field is feasible using "12 latitudinal high-temperature superconducting rings, each carrying 6.4 MA current with a modest 1 GW of power requirement".
(The motivation for the report is the concern about the consequences of Earth losing its field during a geomagnetic reversal, but it doesn't look like those are particularly bad.)
answered 3 hours ago
Anders SandbergAnders Sandberg
10.4k21531
$endgroup$
add a comment |
$begingroup$
You are in luck, since Osamu Motojima and Nagato Yanagi have already calculated it for you in their report Feasibility of Artificial Geomagnetic Field Generation by a Superconducting Ring Network. They conclude that producing 10% of the current field is feasible using "12 latitudinal high-temperature superconducting rings, each carrying 6.4 MA current with a modest 1 GW of power requirement".
(The motivation for the report is the concern about the consequences of Earth losing its field during a geomagnetic reversal, but it doesn't look like those are particularly bad.)
answered 3 hours ago
Anders SandbergAnders Sandberg
10.4k21531
$endgroup$
You are in luck, since Osamu Motojima and Nagato Yanagi have already calculated it for you in their report Feasibility of Artificial Geomagnetic Field Generation by a Superconducting Ring Network. They conclude that producing 10% of the current field is feasible using "12 latitudinal high-temperature superconducting rings, each carrying 6.4 MA current with a modest 1 GW of power requirement".
(The motivation for the report is the concern about the consequences of Earth losing its field during a geomagnetic reversal, but it doesn't look like those are particularly bad.)
answered 3 hours ago
Anders SandbergAnders Sandberg
10.4k21531
answered 3 hours ago
Anders SandbergAnders Sandberg
10.4k21531
answered 3 hours ago
Anders SandbergAnders Sandberg
10.4k21531
answered 3 hours ago
Anders SandbergAnders Sandberg
10.4k21531
10.4k21531
add a comment |
add a comment |
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