Questions tagged [physics]

For questions regarding the physics relevant to fictitious worlds. General physics may be off-topic.

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2answers
51 views

Ways to get around the Square-Cube Law

I am looking for ways to get around the Square-Cube Law for the giants, dragons, and other large creatures of my fantasy setting. What are some realistic ways that it could be done?
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3answers
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Consequences of heat redistribution on the climate of a planet

There are three types of magic system in the world I'm building. One of them, Sundancing(tentative name), can manipulate thermal energy. So they are able to take energy from an enviorment, cooling it ...
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4answers
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Help with the balancing and science of my magic system

None of the names or terms I'm using for worldbuilding are final so please don't judge me too hard on them. Sorry in advance if the answer seems obvious or if I formatted the question incorrectly, I'm ...
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Could a human survive a fall into water with exoskeleton armor?

When a character jumps into water from a great height, they would normally be severely injured, as displacing the water to decelerate is harder than displacing the impacting body. If the body is soft, ...
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4answers
437 views

Help with defining the extent of my character's ability

In the book I am writing, one of the main characters has the ability to convert their own energy (chemical or mechanical) into light/photonic energy, and only that form of energy. I know that this ...
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3answers
160 views

How might a person summon the devil from its prison? [closed]

A society of prophets live according to middle-age superstitions. They abide by a lunar calendar, put a strong emphasis on star signs, and believe they possess psychic powers such as palm reading and ...
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4answers
166 views

What are the fundamental operations of physics?

So, I was going to ask this on physics forums but felt it would be to simplistic to ask it there compared to other, more informed questions. I’m trying to create a magic system based on fundamental ...
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1answer
119 views

Negative Gravity and Spacetime: Does this align with known physics or is it inherently flawed?

This idea is based on a convoluted understanding on space-time. I posted the idea to r/scificoncepts, and it can be found here. The principle I’m working with is how gravity affects time. Generally, ...
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3answers
181 views

What would be the cutting power of the top of an indestructible, immovable, extremely thin force field?

There is a part of my setting surrounded by a 100-foot-tall, four-sided, indestructible invisible wall. The wall is made of all of the molecules that were in contact with the area that became the wall,...
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3answers
83 views

Optimal shape for manipulation via telekinetic light

I have a species that can emit beams of light from their bodies (think flashlight). If the light lands on an object, they can telekinetically manipulate that object (pull, push, lift, etc.). Now bear ...
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10answers
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Are AP slugs for shotguns possible?

When writing stories I usually use war as a simple and understandable way to introduce a conflict that needs to be resolved or sweeps the character away. To keep it interesting I need to build ...
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3answers
263 views

Can we have a civilization living at close to the speed of light?

Imagine many ships traveling close to the speed of light. If they diverge paths to explore distant galaxies, they could calculate their travel so that the same amount of time passes for all ships. ...
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Could cars drive normally on the inside of an o'neil cylinder?

Say we had some type of four-wheeled vehicle on the inside of an O'Neil cylinder with roads. I imagine if it drove in the same direction as the spin, there would not be many problems. However, I am ...
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3answers
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What would be the structural impact of an oscillating orbit on a planet?

Notice : If you wish to know how to make an oscillating orbit with real-world physics, you can looky-look at this question which is following mine. My question focuses on the consequences of such ...
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1answer
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What is the best way to explain a weapon that create a vacuum storm pillar?

I'd like to make an explanation for scientific phenomenon that has been use in this kind of technology without accidentally suggesting that the technologies in my world are advanced enough for space ...
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8answers
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Would my character actually be able to use her “Waterbending” power to swim faster?

So, I have a character who has the ability to alter the velocity of any liquid water less than three inches away from her body, accelerating it in any direction she likes. With concentration and ...
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1answer
97 views

Could this idea for a dark energy prison be plausible?

I recently stumbled upon a post in /r/scificoncepts which talked about Dark energy prisons. (https://www.reddit.com/r/SciFiConcepts/comments/nd11sd/dark_energy_prisons/) To increase the expansion of ...
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1answer
881 views

What would happen if the sun shrunk by 25% in 2000 years?

The big bad vilain is stealing energy from our sun. He has been doing this for 2000 years and the sun has already shrunk in mass by 25%. What are the effects on our earth. From what i found here and ...
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1answer
105 views

Would atomic level welding actually work? For any solid materials? [closed]

In some fiction, there's a welding technique where say, 2 pieces of metal are cut in a way that creates a perfect edge/surface, absolutely flat down to the atomic level, with no impurities or ...
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1answer
598 views

What temperature should a beam of light be at to burn through a person in a couple of seconds? [closed]

A magical technician who creates weapons with lenses, LEDs, and mirrors. What temperature should a beam of light be at to burn through a person in a couple of seconds? Cut a bone in a couple of ...
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7answers
255 views

What would make the atomic structures of matter easier to control in solidified form?

I am Alicia Dimetrescu, better known to my subjects as Lady Dimetrescu, a reality warper with dreams of world conquest. My powers give me the ability to control and change the atomic structures of ...
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4answers
256 views

We actually live in 4D space and everything we know about all below a certain tiny scale is a conspiracy: who needs to be in on it?

I pose an alternate system of physics at the tiny scale. The goal is to refine it so that large particle accelerators are fraudulent devices as part of a government conspiracy, but as an earlier ...
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3answers
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Would there be a point to windfarms in a country surrounding a bay and is also almost fully surrounded by mountain ranges?

To better demonstrate my question, here's a very shoddily made image I made in Photoshop in under five minutes. Essentially this country is an almost full ring of land with a natural barrier of ...
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1answer
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What is the smallest size this black hole ship could be without killing the passengers via g-force?

Context: I'm trying to design a massive colony ship (as in, at least 3 billion tonnes unfueled), built by a hyper-advanced K2 civilization, that will be accelerated via laser pushers and will use a ...
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1answer
101 views

How could 4th Dimensional “pockets” of space form in a 3D world, and how would 3D objects entering and exiting this space appear to observers?

I was inspired by a story that describes an event where many people die on a large industrial ship, and the 'cover up' story stated that the ship entered the 4th dimension, and when the ship appeared ...
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3answers
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Monoreactant pathway for electrical power and thrust using only hydrogen?

In Space Engineers, Hydrogen is employed as a fuel for both propulsion and for electrical power (via the Hydrogen Thruster and Hydrogen Engine, respectively). This feels unrealistic to me, and I am ...
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11answers
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What would be some ways to balance energy/mass from a parallel universe to another when someone - or something - travels through a wormhole into it?

Conservation of energy is a "universal" law, and would be counterintuitive to have someone travelling from a universe like ours - with our physics framework - into another universe that ...
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1answer
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How much water could the Crown Chalice hold as it grows on high-up tree branches?

Context In an half-time semi-arid, half-time watery forest region, lives the Crown chalice plant. It generally stands from the middle to the top of tall and wide trees, a mix between Deane's gum ...
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8answers
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How can a plane of existence contain a pocket realm larger than itself without being destroyed?

A reality warper has the power to manipulate reality. Users can create, shape and manipulate reality just by thinking about it, and may alter something as tangible as physics and the universe to ...
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1answer
129 views

What would happen if a weapon materialized inside an object?

One of the mechanics of the setting I'm developing includes soul weapons. One of their main aspects is that they can become ethereal and pass through matter. So, what would happen if someone poked a ...
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5answers
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How can I explain the terraforming powers of my reality warper?

A reality warper has the power to manipulate reality. Users can create, shape and manipulate reality just by thinking about it, and may alter something as tangible as physics and the universe to ...
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2answers
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What would happen if a tungsten rod massing 1000kg slammed into the surface of Callisto at 15% of the speed of light?

I am writing a sci fi story and I want to know what would happen if a tungsten rod massing 1000kg slammed into the surface of Callisto at 15% of the speed of light? Given that there is a subsurface ...
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How could physics possibly explain the sun hanging motionless in the sky?

Right at twilight, the sun stops setting. It just stays in the same spot in the sky permanently. What would have to happen in physics for this to happen? Would there need to be an event prior to this? ...
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2answers
76 views

Range of radio with no ionosphere

Given a planet otherwise similar to Earth, but which has (for reasons outside the scope of this question) no ionosphere, what would be the effective range of radio communication? I understand radio ...
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2answers
208 views

How to survive a fall from a skyscraper by having super powers to turn yourself into mushrooms?

Given: The character falls from a skyscraper, 200-300 meters high The character has a super-ability to transform their muscles and tissues into yeast, mycelium, fungi, slime molds, spores, and ...
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10answers
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Are there alternatives to mining asteroids/planets for obtaining matter?

I am reading We are Legion, by Dennis E. Taylor, in which humanity has developed the so-called 3D atom printer, briefly described as: 3D printers delivered individual atoms using a number of tuned ...
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3answers
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Seeking good physical candidates for total collapse of the universe we live in

Bringing this question over from Physics SE where it was closed: I'm looking for an 'as close to our understanding of current physics' doomsday scenario that results from something about the physics ...
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1answer
75 views

Inertia Heightening/Dampening Field [closed]

So you have a Force Field around you that can Heighten/Dampen different and multiple inertia at different degrees of heighten & dampening and even negation what all can you do with it. And lets ...
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1answer
171 views

It would be possible to enter and exit a black hole using a Warp Drive? [closed]

Well, a Warp Drive expands and contracts space, passing it through you, technically allowing faster than light travel. And so, it would be possible to actually enter a black hole and thus, exit it? I ...
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2answers
150 views

Could Plasma be used by a monster to detect prey?

I have a monster in mind (based on something I saw in a dream) that is blind and deaf but finds prey by sensing faint electrical currents. It uses naturally generated plasma bursts to enhance ...
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0answers
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Working backwards with particles to get symmetries [closed]

I was wondering whether you might be able to invent, say a new particle or multiple related ones, with their spin, mass, charge etc defined, but not only that, also work backwards to get the ...
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1answer
139 views

Physics of relativistically spinning artifact

Say we have an artifact (in a medieval-technology world). The artifact is shaped as a solid of revolution: perhaps a donut. It weighs a few kg and is <1 meter across. It is absolutely smooth ...
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4answers
338 views

How far could humanity spread through the universe?

Assume we developed a perfect rocket, say a ramjet using a very efficient matter to energy conversion drive, within a few centuries. How far could settlers get with such a technology? The local group? ...
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4answers
131 views

Effect of time distortion on light

In a story I've recently started writing, one thing that can be done with magic is alter the rate at which someone moves through time. It occurred to me first that the colors they would be seeing ...
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5answers
394 views

Hydromancer's Parachute

I am a hydromancer. My magical prowess grants me two abilities: I can breathe underwater (magically) I can instantly summon a sphere of pure fresh water centered on myself that's up to 50 meters in ...
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2answers
326 views

Horizontal Lightning Bolt

So in real life, if you get hit by a bolt of lightning and don't die from it, you just sorta spasm out a lot and fall down in pain whilst the energy of one billion volts of electricity courses through ...
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7answers
355 views

Could aliens be more technologically advanced than us, but still know less physics?

What my question is really trying to ask, is if it's possible that some alien race possesses technology far more advanced than our own, but also have an interpretation of physical results that is less ...
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3answers
114 views

Finding an ideal UV-transparent refrigerant, or how to miniaturize a Fulminium reactor

In my setting, I have Fulminium crystal reactors. Fulminium decays emitting an electrical current spontaneously, but at a greater rate when stimulated by UV light, and it also emits UV and orange ...
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2answers
79 views

Does microwaves (or other types of wave) be able to disrupt radar signals? [closed]

The idea is that this next generation fighter jet would have some microwave or electromagnetic emitters to disrupt the travel path of the waves radars emits and "disappear" from the map, but ...
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3answers
492 views

There is a material that could be used like the Dune's Stillsuit to generate electricity by friction?

Well, even though I used Dune Stillsuit as an example, the idea I have is nothing related to the recycled water they need, just to generate electricity constantly through their journey to keep them ...

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