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Questions tagged [energy]

For questions about sources of power, generation, storage, how much is needed to perform different tasks, etc.

3
votes
3answers
218 views

Solar cells in the Renaissance

An engineer goes back in time to attempt to rewrite history: since global warming has wiped out all but a few living species at his home timeline, he wants to prevent it without preventing an ...
38
votes
22answers
9k views

What would be the ideal power source for a cybernetic eye?

After nearly a decade of development and public prototypes, the Mizaru company is ready to unveil the cybereye. A fully cybernetic eye that provides its user/host with high definition vision, enhanced ...
10
votes
6answers
956 views

Feasability of miniature nuclear reactors for humanoid cyborgs

The idea is to build a cybernetic body for a human. Only the brain and a few glands related to emotions, like adrenal glands, will be kept. The brain and the glands will be in a closed, plug-and-play,...
41
votes
20answers
9k views

What could be the right powersource for 15 seconds lifespan disposable giant chainsaw?

Imagine when a jet fighter swoops in to drop a 400 pounds giant chainsaw to you just so that you can use it to grind down one problematic enemy into a pulp then discard it a foot away from you. What ...
2
votes
8answers
1k views

Ideas for 3rd eye abilities [closed]

I am creating a super villain that developed special abilities from a mutated pineal gland. For now i'm referring to it as the Enhanced 3rd eye or the 3rd Eye ability. From the research I've done, ...
7
votes
2answers
140 views

How small can a perpetual energy source be to run a far-future civilization indefinitely?

You are the leader of a far-future civilization - human or otherwise - that has endured for trillions of years doing whatever far-future civilizations do. You've surrounded stars with Matrioshka ...
8
votes
4answers
246 views

How much fat would need to be burned in order to shock-restart a human heart?

Imagine a device implanted inside the body which can detect when your heart has stopped and, in such a case, burns fat rapidly to generate enough energy to shock your heart into restarting, in a ...
4
votes
1answer
87 views

What would be the ideal way to weaponize plasma?

Plasma is a relatively common weapon in science fiction, with weapons that fire magnetically-bound superheated plasma or melee weapons that hold plasma in a containment field to burn through just ...
2
votes
4answers
325 views

How would a Type I civilization not cook itself?

A type 1 civilization is defined as a civilization that can utilize the maximum amount of energy equal available to its entire planet, roughly 1017 watts for Earth. This is equal to the amount of ...
-4
votes
3answers
83 views

How to compromise block chain force shield? [closed]

Set in the distant future, a notorious terrorist group infamously known as "51 Crew" is planning an ambush near the orbit of Thebe, Jovian moon. In the next few hours an armoured shuttle holding a ...
7
votes
6answers
1k views

If curse and magic is two sides of the same coin, why the former is forbidden? [closed]

A gun can bring destruction but at the same time save lives, both curse and magic belongs to different system and operates independently. Curse requires strong feeling such as suffering pain while ...
4
votes
2answers
133 views

What technology could cause a global black out?

In 2051 a Neo-Luddite movement known as "Amos"/"The Adherents of Amos" detonated some sort of weapon in LEO (low earth orbit) causing a global black out shutting down technology and to a extent modern ...
6
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5answers
303 views

Power Generation Using Undead

Say that we have many undead zombies/vampires/ghouls/whatever. I want to use them to generate electricity, because they never get tired, never need to take breaks, and can exert great force without ...
12
votes
8answers
3k views

How would an energy-based “projectile” blow up a spaceship?

I have noticed this in many fictions: during a battle between spaceships exchanging fire in empty space, a pulse of laser fire hits the hull and the entire spaceship explodes into many pieces. Is ...
4
votes
1answer
74 views

Increasing potential energy with ability thought experiment

While recently reading a physics textbook and thinking about magic systems, I tried to perform a thought experiment I had problems with concluding, so I thought of asking for help. Here I explain the ...
1
vote
0answers
51 views

What's the elemental form used in conjuring a super power/ability? [closed]

Example: kinetic energy used for psychic abilities and chakra for ninjas and so on. What more forms are there? If a knight(mage/magical knight) were to use his 'superpowers', what form of energy ...
3
votes
4answers
284 views

Regenerating Fuel Cell

I'm working on a powered exoskeleton design for my universe and I had an idea about how to power it. It works in this cycle: Water enters an electrolyzer powered by a massive betavoltaic battery ...
9
votes
4answers
218 views

How could dragons produce the energy needed to sustain themselves from gold

I'm currently contemplating ways to make dragons have a sustainable energy source in a medieval world, while still acting like the traditional soaring, adventurer grabbing, gold hoarding dragons (not ...
3
votes
6answers
227 views

Areas with high energy on an Earthlike world

In an earth-like world, what can I provide as examples of areas where high energy is generated naturally? I'm looking for sources of energy other than heat, for e.g, volcanoes and geothermic vents.
0
votes
1answer
160 views

What will it cost me to travel through Time? (Part 1: Travelling forwards in Time - Time Dilation)

There are many questions on Worldbuilding about what item(s) a time traveller should take back in time in order to alter past events or even simply to survive. There has never as far as I know been ...
0
votes
4answers
309 views

What would the effects be if all power grids connected to nuclear reactors abruptly suffered catastrophic failure?

To be more specific, I mean what if every wire, every power cable and transformer on the connected grids to the nuclear power plants all ruptured at once. The transformers literally exploding, the ...
4
votes
3answers
268 views

Could a more convenient form of energy transfer/storage than electricity be possible?

I was thinking about the progress that has been made in terms of energy usage for e.g. transport purposes and noticed how the prominent source of energy had changed over time: first muscle power, then ...
2
votes
0answers
68 views

How would fierce competition affect the adoption of alternative energy sources? [closed]

This is a continuation of the question asked here: How long would it take for nuclear energy to become adopted in a world on the brink of collapse? So, with my current timeline, nuclear energy (and ...
1
vote
0answers
57 views

Can Artificial Expansion of Space Facilitate Dark Energy [closed]

Granted, not much is known about Dark Energy. Indeed, it may not even exist. What we know is that something is driving the expansion of space (understanding we do not live in a Hubble bubble). This ...
5
votes
1answer
170 views

How long would it take for nuclear energy to become adopted in a world on the brink of collapse?

For reference, I'm going with the accepted answer given here: How would technology adoption of Lithium Air battery work?. In my world, it makes sense that governments would be very interested in ...
8
votes
7answers
557 views

Repurposing A Cargo Ship In A Post-Apocalyptic World

How would one go about repurposing a small cargo ship, no more than 50,000 tons, to run on an alternative fuel source/propulsion other than oil? And what alternative source would work best for ...
0
votes
3answers
140 views

how can I ensure that the amount of jing that a person has at birth is completely random?

Spiritual energy, or jing, is a powerful substance that forms the essence of who and what we are. It is the primal energy of our life. Jing is the deep foundational energy reserves of the body and it ...
5
votes
1answer
87 views

Could natural nuclear fission reactors be used to energetically sustain and catalyze the progress of an alien civilization?

According to Natural nuclear explosions natural nuclear fission reactors could occur. Could it happen that a primitive alien civilization has its social, economical and technology evolution ...
5
votes
10answers
3k views

What energy sources would a species use if they didn't have access to fossil fuels?

I'm designing an alien race that hasn't developed electricity yet. Now, one thing about their species is that they haven't discovered fossil fuels on their planet to use, like coal, oil, etc. (The ...
9
votes
6answers
999 views

What's a good way to classify railguns?

Most weapons and artillery are split by bore diameter, e.g. naval rifles of 203mm, 406mm etc. Railguns and coilguns probably won't be classified the same way, I think. Cause if multiple models use a ...
7
votes
2answers
220 views

I cast my stop-time spell and really, really, really want to punch my sworn enemy - which of these two scenarios is more believable?

I spent my life, my fortune, my family connections... I sold my children into slavery and my soul to Ilnarren... Wanted posters hang from from the Abyss of Shrondir to the expanse of d'o (most ...
2
votes
2answers
129 views

Cycle of Reincarnation - Bypassing the wait

Lets say for arguments sake, that a world, with maximum population of 5 billion, the common Joe gets reincarnated a few hundred times since the creation of humankind. This type of reincarnation is ...
2
votes
0answers
80 views

Catastophe inhibitor against WMD's [closed]

I want to have a catastrophe inhibitor (CatIn from now on) that reduces the effects of WMDs like nukes and kinetic impactors, but I do not want it to mess up other physics. It would be annoying if you ...
-1
votes
3answers
148 views

What would an infinite energy source actually unlock for our society? [closed]

Imagine some alien race anonymously "gave" us a Dyson sphere/swarm, and the means to channel the energy, in a way that means free electricity for anybody. What would actually change? It seems like a ...
13
votes
5answers
541 views

Solar recycling or: How to keep your star from dying

I was in the shower the other day thinking about the sun going Nova, you know...like you do, and a thought occurred to me: Could you turn the sun into a stable, mostly closed system? Some details ...
14
votes
5answers
533 views

How much energy did it take for God to part the Red Sea?

EDIT Why this is a world-building query. If I had framed this as, "In my world where magic requires the expenditure of energy, a powerful wizard decides to open a path through a large lake,etc. The ...
9
votes
2answers
366 views

Cost of electrolytic hydrogen

Working on a future history setting; the question arises, since the world cannot run on fossil fuels forever, one way or another, something must end up replacing them; what will that something be? A ...
1
vote
2answers
236 views

Almost realistic way to beat entropy [duplicate]

Entropy will eventually mean that the universe will have send all its energy outwards in the form of light and other radiation, leaving the remaining matter in the universe cold and inert. I'm trying ...
6
votes
3answers
253 views

On the viability of living balloons

This is not a question on whether or not floating, balloon-like organisms are biomechanically viable - I already know the answer to that, which is yes. This instead deals with the plausibility of such ...
11
votes
13answers
6k views

Hypothetical energy source with higher output than Dyson Sphere

For my Science fiction and Fantasy genre book, I need an energy source whose energy output should be much more than even a fully functional Dyson sphere. Can you please suggest some hypothetical ...
6
votes
3answers
218 views

How to transmit energy through rock and store it in crystals?

I have created a species that is basically a sort of land coral covered in a thick carapace made of rock. They live on an Earth-like planet (Class M as they say in Star Trek) and behave like coral ...
5
votes
3answers
251 views

Sea pumps to create rain using windmills to control weather?

I'd love some science advice and facts for this question: If they use wind power to bring up water from the ocean in the day time and spray it on prevailing winds going into land (i.e. 10-15 km from ...
0
votes
3answers
295 views

Incomplete Magic System [closed]

I am looking for help on my system of magic spells and spell casting. The system is made up of three parts; your alignment, your element, and how those two interact. Alignment: Your alignment works ...
1
vote
1answer
63 views

Would these metabolisms be realistic for this ternary system?

First question: Would this simplex ternary system be stable? If that question turns out to be yes, how would an organism based on carbon tetrachloride use the energy types below to provide enough ...
6
votes
5answers
422 views

How would I gain energy from a rotating planet?

A rotating object, especially something as large as a planet or a star, has kinetic energy. However, my question is how would you go about harvesting the energy the object has from rotation to go ...
3
votes
7answers
2k views

Is it hypothetically possible to create a giant levee that is a non-physical forcefield or electronic membrane?

What examples are there in science fiction of molecular shields that can cancel out or "eat" certain molecules--and are they plausible? Is it hypothetically possible to create a giant levee that is a ...
1
vote
0answers
89 views

Physical Force Generation- Applications, weaknesses, and the science behind it [closed]

I've been developing this anti-hero, "Vicious," for a few weeks now- but I need some help concerning the specifics. Vicious has an ability known as "physical force generation." From any point on her ...
13
votes
5answers
664 views

How might kinetosynthesizing “plants” look?

Suppose that there is a moon, orbiting a gas giant, and that gas giant is a rogue planet - it moves freely through the universe, unbound by the gravity of a star. This means that one, the moon will ...
5
votes
5answers
288 views

Looking for a way to power a locomotive in a pseudo-1600s fantasy world

Assuming a world where there were no steam engines available, would it be possible for large passenger or cargo trains to exist? Would it be possible to use horse-engines to power a locomotive? If ...
6
votes
5answers
262 views

How might a medieval fantasy/magic-using society state the 2nd law of thermodynamics?

If a medieval-level society with access to things like magic (which itself follows the laws of thermodynamics) were to have some understanding of the laws of thermodynamics, how would the 2n law be ...