Questions tagged [energy]

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

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1answer
93 views

By what methods could the most energy and matter be collected from a supermassive black holes quasar jets?

I was wondering if it is possible to capture the majority of the energy and matter from the jets of a quasar from a supermassive black hole? The methods that I can think of is some sort of net like ...
4
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1answer
80 views

Could Atlanteans harvest energy from brine pools or convert them into dump sites?

Imagine there is a race of highly intelligent merfolk - let's call them Atlanteans. Both the mussels and the Atlanteans lived together amicably around brine pools. The brine pools, found about 200 ...
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2answers
86 views

what would happen if kinetic energy never existed [closed]

https://www.nationalgeographic.org/encyclopedia/hydroelectric-energy/ if you take a look at this site above it might be able to help you answer my question
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2answers
84 views

Additional energy / matter from parallel universes

If our universe was a zero-energy universe, what would happen if someone would transfer energy / matter or bring objects from parallel universes to our universe? What would be the consequences?
4
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1answer
124 views

If the solar panels on a spaceship were able to convert gamma rays to electricity, how much more power would it produce?

Background for Context: For the science fiction setting I am working on, I was originally intending for spaceships of a specific faction to have solar panel arrays on their larger ships. Originally, ...
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5answers
800 views

What could be an energy source for an underground civilization?

A mostly autonomous city exists deep underground inside a mountain. They enjoy a modern level of technology and engineering. Other than nuclear power what energy sources could they harness to power ...
9
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3answers
927 views

Can a charged particle as big as a soccer ball create destruction equivalent to an atomic bomb?

Charged particles such as protons are associated with the strong nuclear force and coulombic interactions, but as they're tiny, we can only perceive them through static. If a proton gets as big as a ...
5
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2answers
125 views

Feasibility of Neutrino-based Energy Beings

I have seen in most sci-fi books and flicks about the existence of a special type of alien who is not even made up of standard biological composition, but more of a living mass of energy and ...
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5answers
449 views

Feasibility of Energy-Absorbing Shields

So, I was looking at what defines the most interesting type of forcefields, and there came an interesting kind of forcefields that, rather than deflecting or dispersing energy, seems to absorb energy. ...
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2answers
129 views

Can we harness energy from heliopause?

This question pops up in my mind when I read Bob516's question, indeed even a nuclear reactor can't last forever and anything strayed too far out would not be able to receive significant energy from ...
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1answer
57 views

How far off the ground would an android have to hover to not cause damage with their ionic thruster(s)?

If a humanoid robot or other similar weight and sized robots used ionic thrusters on their feet/base of their body to fly and hover along the ground, how far would they need to hover from the ground ...
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7answers
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Is there anything about photons and/or space-time that would allow the detection of an energy-based attack from a distance of ten light seconds?

Ten light seconds is a very long distance: 1.86 million miles (3 million Km). For comparison, the moon is about 1.3 light seconds from Earth and the shortest recorded distance between Earth and Mars ...
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2answers
194 views

Can Matrioshka brains run simulated universes to the subatomic level?

The advanced civilization in my story have harnessed the power of many of the stars in their galaxy and using them for different purposes, one being Matrioska brains. Some of these super computers ...
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9answers
2k views

What makes natural Mana more difficult to contain than synthetic mana?

Synthetic Mana is a form of artificially created energy that is used for various purposes, such as power sources, fuel, etc. These substances can be made in large quantities and stored away for many ...
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2answers
105 views

Entropy, enthalpy, and energy through rapid mitosis

So I'm pretty new to chemistry and all this, but my world involves superpowers, which of course involves immense energy to have the characters use these powers. However, I want to stay consistent with ...
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8answers
1k views

How can a rogue planet get energy for plants to use?

This rogue planet is a cold rocky world where liquid methane replaces water, hydrogen is used in place of oxygen, and a large moon. I was thinking the large moon would have a large tidal pull that ...
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2answers
112 views

Harnessing energy directly from the sun via quantum tunneling

In the universe of my story, the Earth is ridden with metahumans with uncanny powers that do all sorts of different things. Of course, to do all this, they would require a tremendous amount of energy, ...
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3answers
109 views

Plausible propulsion methods given a virtually infinite electric power source

Humanity discovered a new energy source, virtually infinite, that can produce gigawatts of electric power using devices of few kilograms. Land and sea transport obviously will switch to electric ...
4
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1answer
110 views

Antimatter filled buckyballs - The energy storage medium of the future

Antimatter gets used a lot in SciFi due to it's mind-bending energy density. If you can store it in a form that requires no power and is at least mildly idiot-proof then you've just solved half of ...
3
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3answers
258 views

How to discretely sustain a plasma life-form?

I have some plasma life forms that have evolved within the photosphere of a star and also capable of existing on a neutron star and the ergoshpere or accretion disk of a blackhole. This lifeform ...
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3answers
85 views

Could power be generated using the temperature difference in venus's atmosphere?

On Venus the surface is around 467 degrees Celsius. At the top of the atmosphere it is much cooler, and at around 60 km above the surface the temperature is around 40 to 50 degrees Celsius. This is a ...
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4answers
237 views

Options for biological high-density energy storage within the human body

I've got my wizards, who operate by vanilla human biological laws and metabolism. They've got an organ in the pelvis which has its own mechanism - not breaking the laws of physics - which stores ...
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3answers
164 views

Who is likely to die because of a prolonged power outage? How long does it take?

My antagonist is going to cause a widespread blackout to flex on the protagonist, but the unexpected consequence is that some folks are going to die as a result. This will cause the protagonist to ...
5
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8answers
282 views

Why is this planet attuned with a plane of pure energy?

Scenario: Human technology has advanced to a point of having faster than light travel, solving Alcubierre's engine energy requirements by tapping energy from subspace. (I know it's not the only ...
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2answers
205 views

The eating habits of metabolic wizards

If wizards had to draw energy from their bodies, using only existing biological processes and bound to vanilla human metabolism rates, how would they be inclined to maintain their bodies and diets to ...
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2answers
135 views

What is a feasible timeframe for a super-reactor to obsolete all other energy sources?

A super-reactor was created by SRE, Inc (Super Reactor Energy), and it can provide as much clean energy as needed. There's no way to copy it or make another. It operates without problem or fuel - ...
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3answers
163 views

Would a Dyson sphere be useful as a means of power generation?

I have heard people (quite possibly on this site) say that by the time a civilization is able to make Dyson sphere it will be useless to build one for power and energy needs. So, would a civilization ...
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5answers
585 views

How would a Dyson Swarm transmit energy to the Earth?

The Dyson Swarm is common in sci fi as an energy source, and sometimes also as a powerful weapon. As it is commonly understood, it harnesses the energy of the sun, which stores a vast amount of energy....
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3answers
98 views

Creating heat/exciting molecules by controlling their gravity?

Had a character the ability to control the hypothetical Graviton, would it be possible they could move and excite molecules by altering their gravity enough to create heat? Enough for fire? Or is ...
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2answers
164 views

Are Alpha and Beta-Voltaics the solution to the energy storage problem in Scifi?

In Scifi there is often the issue that all the fancy technology like Mechas and Lasguns need a lot of energy. Chemical sources are limited by volumetric and regular power density. Batteries and ...
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1answer
169 views

Could there be something like the Higgs field which gives particles their energy in a similar way to how the Higgs boson gives particles their mass?

First of all, in no way do I have advanced knowledge of particle physics, quantum mechanics, or any other necessary scientific concept for a full understanding of this question. Secondly, this is ...
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1answer
137 views

Feasibility of Flywheel-Powered Artillery

As far as it is known, Flywheels are extremely efficient in energy storage, with the best even able to replace even the strongest batteries. They are accelerated by electricity to extremely high ...
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10answers
10k views

Consequences of an Earth-size object hitting the Sun?

Suppose an extra-solar object the size and mass of the Earth, travelling at a speed of $26\ \mathrm{km/s}$, the same of ʻOumuamua (the first known interstellar object crossing our solar system), hit ...
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3answers
126 views

What is the most efficient way of mining energy from a flare star?

Set in the distant future, human is transitioning to a type 3 advanced civilization on a Kardashev scale in about a hundred years or two. We have nearly exhausted the energy from our Sun and several ...
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8answers
5k views

What are some of the most powerful theoretical sources of energy?

So, in most sci-fi worldbuilding, there inevitably is a need for powerful energy sources to do all the magic, which simple energy sources such as burning coals, energy from the earth and possibly even ...
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2answers
139 views

How to keep a creature capable of matter/energy conversion from eating planets

So I've got this superpowered mutant superweapon created by some metallic race. It was meant to devour life on worlds in order to clear out areas for colonization, but stuff went wrong and it escaped ...
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7answers
360 views

How can an individual provide a higher quality of energy the more depleted it becomes?

Spells requires a certain amount of orgone for use in order to have an effect. The more powerful a spell is, the more it requires of its user. Most witches have a orgone level of under 100, with the ...
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2answers
112 views

What would be the effect(s) of high-speed plasma impacting a planet?

As a follow-up to this question, what would be the effect(s) of a high-speed of super-heated plasma entering and impacting on a planet? The planet is about the size of 1.2x Earth(s), with a similar ...
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1answer
181 views

Just how powerful can Zero-Point Energy be, if it was mastered? [closed]

So, amongst multiple forms of energy production, Zero-Point Energy (or Vacuum Energy) is less often mentioned about. As of now, it is most commonly theorised to be best used for batteries that never ...
6
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2answers
162 views

Life without a bright star?

The main source of free energy that allowed life on Earth to develop was our sun. It bombards the planet’s surface with photons of high energy, which provide activation energy for reactions necessary ...
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5answers
233 views

How can i get around power limitations due to battery size?

My story has a few androids and some beings that can manipulate electricity with their bio battery electric organs and I want these characters to have the ability to shoot powerful lasers, plasma ...
3
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1answer
181 views

How can I achieve the results of Pompeii with divine energy?

Gods occasionally visit the mortal realm for particular reasons, such as certain festivals or to do battle against demonic forces in an invasion. In the case of the latter, a god has to be careful ...
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5answers
207 views

Will it possible to transform thermal energy into electrical energy some day?

Thermal energy is everywhere on earth. If it could be transferred into electrical energy it could serve as a great energy source. This idea is violating the laws of thermodynamics. But it's not ...
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3answers
195 views

Anatomically correct Kryptonian, part 1

Part of the Anatomically Correct series of questions. Due to the nature of Superman having so many different powers, I wanted to focus specifically on one aspect of his character: the ability to be ...
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1answer
93 views

What would we see driving through a country or coastline of a distributed and hardened Hydrogen energy infrastructure?

I could describe the energy infrastructure of 15th century Holland by describing colorful windmills set up to drain swamps, saw wood, power woodworking mills, and process food. Dutch carpenters busily ...
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9answers
1k views

What would be the most practical raw fuel for a hydrogen economy?

In a near-future world we have stopped directly fueling private, public, and mass transit and we have migrated to a hydrogen economy as the standard energy carrier. Consider the following factors: ...
4
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3answers
186 views

How can I meaningfully define the energy cost of magical levitation?

In the world I'm building, there is a form of "magic"¹ that effectively amounts to metabolism-powered telekinesis. In particular, there is a maximum power limit of approximately 20 W/kg relative to a ...
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5answers
209 views

Generation ship “stealing” resources without acceleration or deceleration

How could a generation ship "steal" energy or resources from star systems which it passed without changing velocity?
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5answers
592 views

Would a magic-using society create living batteries?

Postulate My world has functioning magic which is capable of exerting kinetic effect. (That is, move objects, or generate heat, since "heat" after all is just motion at the atomic level.) It can't ...
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4answers
547 views

How much energy do plants produce?

Consider a magic system that follows the Eragon model; "doing it by magic takes just as much (biological) energy as doing it the mundane way". In Eragon, magical energy can be drawn from other living ...

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