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Questions tagged [electromagnetism]

For questions involving the fundamental electromagnetic force. This includes electricity, magnetism, light, and other phenomena.

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15 votes
9 answers
997 views

Species that can create magnetic fields

I am trying to come up with an explanation for how a creature could create strong magnetic fields with a high level of control. I'm thinking that their 'writing' would be similar to how computers ...
2 votes
1 answer
32 views

How much propulsion could solar weather induced variations in Earth's magnetic field provide?

The Bifrost Drive is so named because it taps into a source of energy that drives the aurora borealis. It works as follows: A craft is placed into the Earth's magnetotail near the L2 point. (I ...
5 votes
3 answers
3k views

Telekinesis via electromagnetism and its energy requirements

Alright, so I've got a superhero story in mind that I'm trying to get the worldbuilding down with. With that being said, I am open to some handwaving but I'd like to keep it to a minimum. First of all,...
2 votes
5 answers
1k views

How could ear plugs resistant to extremely loud sounds function?

In my story I have a character with the ability to emit powerful electric blasts. These electric blasts as you can imagine emit extremely large amounts of sound, heat, light, and obviously current. I ...
0 votes
1 answer
78 views

Lichtenberg figures [closed]

I am writing a story in which a character is wearing an insulated suit (rubber) to protect himself from being severely injured or killed by electrocution, but it will not fully protect him from a very ...
2 votes
1 answer
91 views

Could an exomoon be bombarded by electromagnetic radiation from its parent gas giant and still be habitable enough for life to evolve? [closed]

What I'm trying to accomplish here is having a setting where complex electronics are not feasible or so difficult to shield that they're not worth the time. Mechanical technology is the rule on this ...
1 vote
2 answers
152 views

Using electromagnetic force to induce insanity

I have an idea for a character that has absolute control over the electromagnetic force within the universe, and he can do this without any real limitation or worry about conservation of energy, ...
1 vote
0 answers
36 views

What should the core mass fraction of a habitable planet that orbits very close to a dwarf star be to ensure electromagnetic protection from flares? [closed]

After reading this question, I became quite worried about my own habitable world with similar characteristics. Even worse, my star is presumably much younger -- only 8.787 Gyr (out of 50.207 Gyr). ...
1 vote
1 answer
129 views

Super speed based on magnetism

Context In my story there are several types of magic like wind magic, gravity magic, etc. My main character possesses magnetism magic which includes the ability to create strong magnetic fields on ...
7 votes
7 answers
2k views

Would it be possible to create a telepathic field with electromagnetism?

Recently, I am becoming interested into solarpunk, and naturally I started trying to figure out some ways to create an original setting. Among other concepts and ideas, it came to me that it wolud be ...
5 votes
3 answers
126 views

What would make more sense for a floating city on Earth in a dystopian future: flux pinning or magnetic repulsion?

Here are some of the general characteristic regarding both FP and MR: Flux Pinning Requires a superconductor (usually type 2) that is cooled to extremely low temperatures Requires a magnet whose ...
0 votes
1 answer
102 views

Lorentz force for telekinesis

I am trying to come up with an explanation for how somebody could charge objects and control them with magnetic fields. I'm thinking that they could have a high voltage electric field generator to ...
3 votes
1 answer
325 views

Using explosive flux charges as an electric cannon power source

Finding ways of powering electric cannons in a compact and lightweight manner has been a common source of interest to me. While looking through some articles and other answers I found out about ...
0 votes
2 answers
117 views

Geomagnetic Storm Superweapon

I have an enemy planet with advanced technology and extensive defense infrastructure. All defensive infrastructure relies on electronics. I want to destroy the infrastructure, but leave the people ...
8 votes
5 answers
3k views

What is Plausibility of a Megalodon sized creature attacking a human? [closed]

I have a speculative zoology world with large sea creatures. The astrobiologists don't have a submarine, but they have hi-tech scuba suits. I'm wondering about the reasons for why such large creatures ...
3 votes
2 answers
208 views

How would somebody who controls magnetic fields prevent being pulled towards the source of a magnetic material

As I have mentioned before I have a hero who controls magnetism. They control magnetism via a magnetic organ that can generate multi tesla fields. However I do not want this organ to be pulled out of ...
1 vote
3 answers
239 views

How to build a world with magnetic levitation?

Picture this: Alpha Centauri Cb (AC) has 14% Earth's oxygen 110% Earth's gravity A 60-hour day/night cycle 240-hour orbit (10 Earth days = 1 AC year) Eccentricity produces all 4 seasons in 4 days ...
7 votes
1 answer
203 views

What noise would a nuclear gas turbine make? [closed]

At the core of the powerpacks of the upcoming generation of powered exoskeletons are dusty plasma fission fragment reactors, in which nanoparticles of nuclear fuel inside a vacuum undergo a fission ...
-2 votes
3 answers
147 views

Limits of an eddy current force fields

In my story I need a nigh impenetrable force field as an ability for a character. I have done some research that the force field should be a magnetic eddy current. Eddy currents can block conductors ...
5 votes
8 answers
2k views

Creating flying cities

Writing about suspended cities within a planet's atmosphere! The story itself focuses on the air forces that fight for each of the hundreds of floating city states living in the sky, but that's here ...
2 votes
1 answer
146 views

What's the maximum mass for an Iron Planet to have a magnetosphere like Mercury's?

I'm designing an iron planet which migrated into its habitable zone. Basic research told me iron planets cool off too quickly to have a magnetic field, so initially I was looking for ways native life ...
4 votes
1 answer
117 views

Space station maglev junction design

I'm designing a city building game in a huge 3D (without any notion of "top" or "bottom") space station (or rather, a space city). There are various functional buildings (vertices) ...
3 votes
2 answers
310 views

Can magnetic fields be used to either strengthen or weaken chemical bonds? [closed]

My understanding is that magnetic fields compress atoms slightly. Could this conceivably be used in combination with certain substances with very specific properties to strengthen them in the presence ...
5 votes
4 answers
2k views

If I move momentum from someone's body to the ground, creating thrust, am I violating the laws of thermodynamics, even though I conserve momentum?

I'm trying to create flight by mathematical adjustments that don't actually violate the laws of thermodynamics. The obvious thing to do would be to neutralize gravity, but that doesn't create ...
5 votes
4 answers
3k views

Could a magnetized chain work as a grappling hook?

Once the chain is swung and wraps around the desired structure could the magnetism be strong enough to support a person swinging from it?
-1 votes
1 answer
156 views

Could Mages which can control London Dispersion Meaningfully Control the Air [closed]

Alright, so I've been trying to figure out my magic system for my story, and I'm trying to figure out how I could have water mages that were actually powerful. My fundamental idea behind the magic ...
3 votes
2 answers
147 views

Could ferrofluids give humans magnetic properties? (Part 2 of Magnetic Gravity Series)

In my previous question (Could magnetism work in place of gravity for large bases in space?), @JBH brought up that ferrofluids in the diet of people on these stations could keep them magnetically ...
0 votes
1 answer
94 views

Practical effects of Torchship-strength Magnetic Nozzles [closed]

In a sci-fi universe with high-end interplanetary torchship technology (think the Expanse), high-speed space travel is normalized, with ships of all sizes regularly traveling between planets on the ...
2 votes
1 answer
85 views

Minimal inductance vs Superconductors and Unintended Consequences

I have a setting with railguns. To make them more feasible I have some particles that can be applied to metals, wirings etc.. These particles can change the properties of the metals/objects or the ...
2 votes
1 answer
263 views

Using Neutron Stars to Generate Electricity

Quick question In my world building project I have a civilization that lives on a planet that orbits a Neutron star. Neutron stars have an extremely powerful magnetic field so I was wondering if it ...
3 votes
2 answers
353 views

Stop all mobile phones with EMPs

In this question, I found out that a single EMP is not enough to stop all mobile phones from working. So as a follow-up question: how many EMPs would you need, and how expensive would this be? To be ...
5 votes
1 answer
1k views

EMP that causes all mobile phones to stop working

I know that there exist nonnuclear EMP weapons, but these do not influence the entire world. Could someone build a device that creates an EMP that is powerful enough to make all mobile phones on the ...
6 votes
1 answer
326 views

Can EM waves naturally create sonic waves?

Q:Can EM waves naturally create sonic waves? For example, could a natural antenna (e.g. a seam of conductive metal or the right kind of rock)receive em radiation and through thermal/mechanical or ...
3 votes
1 answer
174 views

How much diamagnetic levitation can a human handle?

One of the limitations to human space travel is acceleration limits. We'd really like to just shoot spaceships out of a cannon to 99% the speed of light, but the resulting pressures on the human body ...
4 votes
3 answers
1k views

Can ultra-low-frequency photon rockets be "safe"?

Your typical photon rocket is imagined as being an antimatter-powered, gamma-ray laser. A flashlight of extremely lethal ionizing radiation, capable of sterilizing a planet if pointed the wrong way. ...
1 vote
3 answers
267 views

Would a ferro fluid cloud work as a "force" field for space combat?

Bit of a weird question, but lemme explain. I want to make shields that block lasers but don't block projectiles, As lasers in my world are very powerful. I heard that military grade lasers can be ...
1 vote
3 answers
338 views

Would the magnetic fields of double-planets clash? and what would happen then?

I will take the basic properties of a previous post "To make it easier, assume both planets have same mass, radius, and atmosphere as Earth, they orbit each other at a very close distance of 30,...
-4 votes
1 answer
79 views

Thermoelectric-powered electromagnets to render Mars habitable

The answers to my latest question on restarting Mars core have finally convinced me; I have abandoned the concept of doing so. However, whilst morosely browsing other questions on giving Mars a ...
2 votes
4 answers
821 views

How could a man-portable EMP shotgun generate a pulse?

The Story (this starts playing) The reactor core room is coated in black inky sludge, dotted with glowing blotches of cyan, with black tendrils laced up the hydraulic shocks and all around the reactor ...
2 votes
2 answers
57 views

How can we move the Moon into a more distant orbit by using electrostatic charge?

Earthers wish to change the Moon's orbit in order to adjust the length of a lunar month. They intend to do this by giving the Earth and the Moon equal electrostatic charges thereby pushing them ...
6 votes
2 answers
315 views

What effects would a Jupiter-like gas giant's magnetosphere have on a human civilization on its habitable exo-moon?

Background: Like many others here, I'm building a world for a story I'm writing. I'd like it to be taken for granted that a moon roughly the size of Earth that is habitable for humans could exist in a ...
4 votes
2 answers
4k views

Could an electromagnetic pulse be made directional?

Reading about Non-nuclear electromagnetic pulse (NNEMP) weapons that generate high-intensity electromagnetic bursts to frazzle electronics. Now, when other kinds of electromagnetic wave are generated (...
6 votes
2 answers
372 views

Effects of Superconducting Rings to create a magnetic field around a planet

Continuing along my oft-contineud series of questions relating to terraforming, I return to an idea of giving Mars a magnetic field which I had hitherto dismissed. The idea is that a huge ...
5 votes
9 answers
612 views

Technology to see an invisible being

I have a world where there are two types of beings. One type, let's call them X, exist in our "dimension," and the other, let's call them Y, exist in another "phase" or dimension. Only 10% of X ...
1 vote
2 answers
180 views

Biological Electroreception/Electrogenesis (Electrolocation) In Air Medium

So i got inspired by the electrolocation senses of some water animals that can be passive like sharks that only detect the electric signature of other animals, to active like electric eels that ...
2 votes
3 answers
4k views

Is a planet-sized magnet a good interstellar weapon?

(Same universe as Saturnian Cloud Cities and Quazar Power Plant) In this setting, humans (Earthborn) are the first intelligent life to emerge in the Milky Way. They have now unified and became a grand ...
2 votes
4 answers
152 views

Why does my chaff like particle cloud reflect or "jam" enemy radar?

I have a hover tanks zipping around in my setting. None of these vehicles utilize physical optical view ports. All information is gathered from sensors. As such there are a multitude of cameras, ...
4 votes
6 answers
937 views

Could magnetism work in place of gravity for large bases in space?

So, in my sci-fi future, humanity has spread across the universe, made contact with many sentient races, and advanced technology greatly. However, very few bases in the vacuum of space can use ...
-3 votes
2 answers
325 views

Terraforming Mars by making Ceres orbit it

So, Mars is a stubborn planet that refuses to be terraformed. No matter how much air you import in order to create a atmosphere around it, it will be blown away in a short time. And there is one ...
4 votes
2 answers
189 views

How fast can an alien laser cannon be charged with a magnetic field?

I have some alien laser cannons that I pulled out of a perpetual hurricane. They're cylinders that are two feet long and one foot across. They can only be charged by magnetodynamic coupling - that is, ...

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