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Questions tagged [energy]

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

4
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3answers
228 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
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0answers
54 views

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

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 ...
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0answers
48 views

Can Artificial Expansion of Space Facilitate Dark Energy [on hold]

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
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1answer
151 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
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7answers
493 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 ...
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3answers
128 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
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1answer
79 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
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10answers
2k 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
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6answers
977 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 ...
6
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2answers
141 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
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2answers
110 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
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0answers
78 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 ...
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3answers
95 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 ...
12
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5answers
435 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
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5answers
483 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
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2answers
301 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
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2answers
181 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
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3answers
230 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
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13answers
5k 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
195 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
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3answers
219 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
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3answers
255 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
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1answer
62 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
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5answers
412 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
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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 ...
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0answers
76 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 ...
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5answers
427 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
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6answers
239 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
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5answers
237 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 ...
0
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2answers
331 views

Schools of magic based around energies, not elements [closed]

The classic approach of categorising magic spells based on a variant of elemental groups a well-established trope, but has never had me particularly convinced. We're used to seeing Earth, Wind(or Air)...
1
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2answers
99 views

How to process crystal based source of energy into liquid form? [closed]

I start to write sci-fi story and there's a chapter where a mining plant will work with this source of energy called Extrenum. This energy was taken out from crystal rocks material but I wonder if it ...
2
votes
1answer
155 views

Viability of animal plant? (Energy calculation)

I'm trying to design a humanoid or anthropomorphic organism that would be classified as a plant. The main argument people mention is that it wouldn't be able to produce enough energy to survive. I've ...
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5answers
218 views

Backing Futuristic “Credits” with Energy?

A lot of worldbuilders that I know and have spoken too, insist that unbacked currencies and items with constantly changing values would be what the economy is based on. I, however, am skeptical of ...
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3answers
243 views

Is it possible for an organism to convert magnetic radiation into a sustainable energy source?

For backgrounds sake, let's say that there are large, and I mean large beings living underneath the icy surface of Europa. Now consider this excerpt from NASA's page on Europa: One of the most ...
2
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2answers
179 views

How much energy would be required to vaporise a giant reptilian monster?

At the climax of my story, the main antagonist transforms into a gigantic and nigh-unkillable monstrosity that resembles an unholy hybrid of a crocodile, Mosasaurus and Dimetrodon. After a long and ...
3
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1answer
144 views

What are the limits of energy density? [closed]

I'm writing a story where in the future bullets have become obsolete as batteries have become cheap and very energy dense, so much that making defensive lasers that are able to vaporize bullets before ...
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1answer
147 views

What is the smallest theoretical energy generator possible for generating huge amounts of energy? [closed]

There are the examples of the Dyson sphere or the black hole bomb but those are too big. Is there any other source of energy you could theoretically contain on earth that wouldn't crush it or us down ...
0
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1answer
83 views

Can an Earth like planet support life by building a Dyson Sphere across a White Dwarf or a Red Dwarf star? [closed]

Is it possible to depend on a white dwarf as our power source, provided that we harness 99% of energy? Can life be sustained? How it will change the climate and the seasons of earth if it is our ...
38
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14answers
7k views

In a post-fossil fuel economy, what could natural gas pipelines be used for?

The United States (as well as many other countries) is covered in a vast network of tubes: These tubes vary greatly in diameter. Some could hardly fit a baseball, while others are large enough to ...
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8answers
2k views

Can Zeppelins and Blimps replace cars in the future?

It would be cool if this entire planet could use zeppelin roadways instead of tarmac roads. Especially for countryside transport away from cities. A zeppelin for one person is about the size of a ...
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2answers
156 views

Energy generation for spaceships

Consider a near-future situation where humans have begun to explore the solar system, most groups are still working to start a profitable mining operation and only a few ships have gone beyond Jupiter....
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5answers
7k views

What are the safety margins for destroying a planet from space?

My empire's flagship, the Persecutor class UJBHE1 Abhorrent, rides into the home system of my greatest enemy, Baron Obsequious, levels its Death Ray2 at his beloved home, and pulls the trigger.3 ...
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3answers
163 views

How do my PA civilizations rebuild after a depletion of the planet’s natural fuels?

How do my PA civilizations rebuild after a depletion of the planet’s natural fuels? Even with a wealth of information to rebuild, would civilization still be permanently stunted due to being unable ...
2
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1answer
99 views

My ship is traveling at 0.05c, is the energy from debris impacts trackable?

While once living in Texas, my family and I had the privilege of watching a shuttle re-entry. It was breath-taking. I kid you not, it was like watching the finger of god drawing a line of fire ...
2
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3answers
195 views

Biological Reactor through Genetic modification?

As all of you know, humans eat for energy. While being able to maintain homeostasis is great, it's also human to want more. Maybe we want stronger muscles, or the ability to breath fire, or even to ...
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7answers
608 views

Could black holes be a better source of energy than stars?

In my story, set in the far(ish) future, humanity discovers a way to extract energy from black holes (perhaps via the Penrose process?), which sparks conflict as various factions attempt to take ...
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0answers
156 views

If humans found unlimited energy, would there be more peace or less [closed]

Fusion reactors would effectively allow us to harvest infinite energy at little cost. It seems we may be getting close to achieving this - https://www.engadget.com/2018/03/09/mit-embarks-ambitious-...
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1answer
101 views

Energy planets, how to get the energy off it in an economical way

In the universe there are several worlds where energy harvesting is feasible without pesky wild life habitat preservers standing on your patch'o land bare breasted. So earth has set out to harvest ...
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3answers
156 views

Integrated shielding for a space ship [closed]

I came up with a concept for a shielding system for space vessels. The outer hull plating is made up of a special material, like modified steel perhaps. Energy from the ship's main power source is ...
3
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4answers
289 views

Lead as a nuclear fuel

On a timescale of 1e11 years, all uranium and thorium will have decayed, but planets will still exist, orbiting red dwarf stars. Would it be possible to use lead as a nuclear fuel? In principle, the ...