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Questions tagged [magnetism]

For questions about the force of magnetism and its applications.

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Downsides of a Magnetosphere stronger that Earth's? [duplicate]

It is clear that a planet that possesses a weaker magnetosphere than that of the Earth will present issues (such as less protection from stellar radiation) to a potential human colony. However, are ...
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Effects of magnetic fields overs biological life [closed]

How would life evolve on a planet or other place with a high magnetic field? (It should be a field strong enough to attract tools and weapons and stick them to the ground.) The life forms that would ...
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6answers
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Can magnetism be what causes my flat Earth to accelerate?

It has been determined by observation of the stars that the gravity on Flat Earth is due to it accelerating upwards at 1G. This is what holds people and objects to the surface. It has also been ...
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1answer
40 views

Can a spaceship land on a strongly magnetic planet? [closed]

What would happen to a spaceship if it tried to land on a planet that had a magnetic field as strong as Jupiter's?
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3answers
287 views

What is the most powerful magnetic field a planet could generate?

What is the most powerful magnetic field that could be generated by a planetary object? The measurement of 'powerful' will be field strength ($\mathbf{B}$-field) at the planet's surface, in teslas. ...
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3answers
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Could I use a series of magnetic asteroids to create a magnetic field for mars?

If I push a couple of magnetic asteroids into mars gravitational field, could they form an interlocking series of magnetic fields able to protect mars from solar winds? Size limits for asteroids is ...
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3answers
273 views

How much electricity could an iron core moon passing over a copper deposit on a planet generate?

Assuming the moon is the same size as ours and its core is generating a magnetic field, and the copper deposits are quite large, consisting of a tectonic plate containing huge deposits of native ...
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2answers
132 views

What is a usable formula for determining the necessary strength of a planet’s magnetic field for it to be habitable?

To my understanding, part of the reason life is able to exist on Earth besides its ozone layer is due to its magnetic field, which protects the planet and its life against solar winds and keeps the ...
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2answers
70 views

Can magnetism be used to transport small scale vehicles across Mars

I was imagining taking advantage of the large amount of iron within the dust and rocks of Mars, allowing for magnetic engines of some kind propelling vehicles forward. Is this possible at all? What ...
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3answers
184 views

Life and technology in magnetically-floating islands [closed]

I'm designing a world that has a series of layered floating islands, that are kept aloft due to magnetism. What sort of secondary effects might occur with a planetary magnetic field strong enough to ...
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2answers
244 views

Could I put a large city into geostationary orbit?

I want to put a circular city in geostationary orbit. The city will have a radius of 20Km. I was thinking of using quantum trapping/levitation to achieve this. Here's what quantum trapping is: ...
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2answers
403 views

Would there be any mass extinction should the polarity of Earth magnetic field flips at 1 GHz? [closed]

If the polarity of our Earth magnetic field were to flip (oscillate) at around 1 GHz or 1 billion cycles per second, would it spell disaster to fauna and flora that depends on it for navigation like ...
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2answers
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How could a technological society exploit an absurdly strong, permanent magnetic field?

In a previous question on this site I asked about the side effects of a having ludicrously strong, permanent, static magnetic field on the surface of a planet, capable of pulling in non-magnetized ...
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4answers
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What would be the side effects of a massive, strong magnetic field?

A permanent static magnetic field appears on the surface of a planet that is sufficiently large and strong to attract non-magnetized ferromagnetic objects up to 100 miles distant from the source, with ...
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3answers
1k views

Lodestone Furnace or Forge

I had a thought last night about how to build a more efficient furnace in a fairly low tech society. (I build Games, so this is part of my world mechanics) My question is: How feasible is this idea ...
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3answers
211 views

The Electric Dragon

The Volt Dragon is an incredibly dangerous beast that reeks havoc on any attempted air travel. This dragon generates many small but powerful magnetic fields whose strength can be varied voluntarily by ...
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2answers
239 views

Could soft matter infused with nano or pico sized magnets be used to clump together so that we could create environments with it?

I am trying to create a planet with low gravity that keeps an atmosphere and has an ocean that covers the whole planet. Basically I am developing beings (separately from this question) who can live in ...
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4answers
614 views

Orbital Mass Accelerator. Space Elevator

Can two objects solar powered, equal in weight, traveling on the same orbital path in the opposite directions propel each other to intersect on the opposite side of the Earth in alignment to propel ...
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2answers
65 views

Can extremely powerful geomagnetic storms be made plausible on an otherwise Earth-like world?

I've been playing with ways to make my world interesting, and also further justify the limited use of ferrous metals. One idea I had was that my world might undergo regular and intense geomagnetic ...
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4answers
1k views

Could a solar flare create terrestrial areas of background radiation?

Inspired by this question from yesterday. Solar flares can give off a large amount of radiation, but on Earth this is typically absorbed before it reaches anywhere but the poles, and even then only ...
14
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3answers
1k views

Inducing a Solar Flare

Is there a way to induce a solar flare / coronal mass ejection (CME)? For instance, could a very tight glob of charged particles reconfigure the the Sun's corona leading to this type of event? Is ...
4
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1answer
180 views

Could plant life evolve on a world with a toroidal magnetic field?

Let us assume that my new world has within its rings, shells, and blobs of remarkably cool magnetically-involved stuff such that its magnetic field is toroidal (shaped like a donut) rather than ...
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4answers
1k views

How would an EMP affect a maglev train system?

I'm looking for a description of how an EMP might affect a magnetic levitation train system that is NOT connected to the local power grid. Specifically, if the maglev was active, would the train be ...
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1answer
176 views

Would a magnetic monopole rocket engine produce more energy than an ion engine?

Would a starship that was propelled by magnetic monopoles fly faster and longer than ion engines (assuming magnetic monopoles exist) of course.
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2answers
264 views

Is it possible to use a planet's magnetic field for transportation?

On a planet, a species uses magnets (i.e. float in the air) instead of wheels for transportation. Roads are easy enough, just slap some magnets in it, at it works. But I was wondering about the ...
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3answers
385 views

How does an O'Neill cylinder generate its own magnetic field?

The purpose of a magnetic field is to shield against solar winds, which are relativistic ions produced by our Sun. This is a typical O'Neill cylinder with 4 islands. I'm looking for a cost effective ...
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3answers
295 views

How do passive, toggleable magnetic clamps function?

See, I'm a low-g cargo shipper by trade. We get all sorts of containers in all kinds of shapes that we need to fasten to the deck plating, and to do that we use magnetic clamps. Now, these clamps are ...
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3answers
342 views

What sort of forces can be expected in the sudden stop of a rotating space station ring?

This is a bit hard for me to put into to words, but it is an idea I have been working on for a few days, with input from a few other people. I have actually brought up part of this in a previous ...
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4answers
151 views

Would using Magnetic Coil Platforms be an effective way to transport people across Solar Systems

QUESTION So recently I was doing research on Magnetic Coil based weaponry in the Halo universe, and while reading about how the "Super Mac" worked, I noticed that the theoretical speeds at which the ...
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2answers
161 views

How big/how many permanent magnets would it take to create a good Martian Magnetosphere

I was reading a question regarding building Mars's magnetosphere and one respondent proposed setting up a thousand or so permanent magnets equidistant all over the planet to build the magnetic field. ...
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2answers
142 views

What can temporarily disrupt Earth's magnetosphere?

I'm trying to find some type of space weather or other natural occurrences that would result in the intensity of Earth's magnetic field dropping for a few hours to maybe a week or two at most. ...
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1answer
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Could a species evolve a special organ that stores pure energy & allows it to control its own magnetic field?

Could a species, over centuries of evolution, evolve a special organ that stores pure energy and allows it to control its own magnetic field? What possible steps would have to happen for this to occur?...
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2answers
298 views

If Earth's Core Had Mercury's Super Core

Earth is protected by a magnetic field. Not only does it shield life from solar radiation, it also guides animals to their migratory grounds. But here's the thing, according to Universe Today: ...
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5answers
992 views

The Moon has a magnetic field instead of the Earth; what are the changes in navigation?

I'm curious as to what the implications to any navigation system are: ship trekking aviation etc. Will their compass change shape (as being spherical), or might they dump the compass alltogether ...
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4answers
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How can I weaponize solar flares?

Could a solar flare be coaxed from a star with a magnetic weapon, possibly by manipulating magnetic reconnection? Could the resulting flare be aimed at a planet (or space fleet) with any accuracy? I ...
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4answers
213 views

Can an android be “immune” to electromagnetic forces?

I'm having no luck researching this topic so my terms may be wrong or my entire premise faulty. I have found a related question that might be a corollary: "Can I kill a cyborg with magnetism?" My ...
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3answers
162 views

Is there any phenomenon that could result in a huge solar storm?

As per the title, is there anything with near future tech, unlimited budget and fast cheap spaceflight that could be done to induce a huge solar storm or flare three or more magnitudes greater than ...
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1answer
193 views

Can matter be super-compressed by a magnetic field

So I had this idea for an FTL drive that would work by creating a rift (a black hole before it tugs on space enough to become unstable and deadly) via an unbelievably strong magnetic field. I know ...
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1answer
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“It's not the fall that kills you . . .” The capabilities of this kinetic shield [closed]

Kinetic shields From Dune's Handwavium I mean Holtzman-shields to NGE's AT-fields. It's a common practice to make knife fighting/D.E.Ws viable wit a magical shield, that counters any other attack ...
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2answers
164 views

Killing a magnetic shield

Now that I have a proper plasma rifle, I only just have to kill, disable, or make my enemy disable his/her/its magnetic shielding for enough time to properly roast him/her/it to a smoldering pile of ...
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2answers
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How would a planetary ring react to a magnetic field?

So for the story I'm writing, I'm designing is a gas dwarf with a very strong magnetic field and a planetary ring with a slightly inclined orbit. However, the rocks within the ring are very sensitive ...
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4answers
183 views

How can we generate energy by using a planet and its satellite [closed]

Like magnet on Moon and coil on Earth , as in motor where magnet revolve around coil ..(Notice that it's an idea behind it; I don't want to cover earth with coil and moon with magnet or vice versa; ...
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0answers
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Can a planet's magnetic field be used to generate power? [closed]

According to my relatively shaky understanding of science, moving a conductor through a magnetic field generates power. And the magnetic field of the earth rotates with the earth. So, if an orbiting ...
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5answers
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Astronaut magnetic “gravity” injections

Would it be possible to somehow inject astronauts cells with safe amounts of magnetic metals, or use some sort of magnetic properties, to hold them down to a space station floor with magnets?
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2answers
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Under what circumstances will magnetic levitation kill Average Joe?

After the WorldBuilding community helped Average Joe start his own microstate, Joe has become scientifically inclined, and uses his money to conduct somewhat dangerous research projects from his ...
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3answers
236 views

Holding in an atmosphere primarily using a magnetic field

Assuming it was possible to create an artificial magnetic shield on the moon, would it be possible that a sufficiently powerful field could hold onto an atmosphere despite the low gravity. Thanks
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3answers
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What substance could stop a magnetic field? [closed]

I've seen in TV shows with an MRI machine that the characters are behind a glass screen, with things like computers and metal things in there. Is this something that actually blocks the magnetic field ...
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2answers
337 views

Is magnetic telepathy possible?

So I have a story about humans far off in the future on a different planet that have evolved to be more in tune with electromagnetism and magnetism. Their technology mostly works because of magnetism. ...
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3answers
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Could exoplanet with Earth's magnetic field orbiting a binary star system harbour intelligent life?

The binary stars system is comprises of a red giant with 6 solar masses and a Sun-like star, the exoplanet is orbiting in the Goldilock's zone with a molten iron core which generate a magnetic field ...
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3answers
163 views

Likelihood of a large magnetic island remaining undetected until the early 20th century

In Edgar Rice Burroughs' The Land That Time Forgot, the crew of a captured German U-Boat discovers a large island in polar waters somewhere between South America and New Zealand called Caspak. Among ...