Questions tagged [electricity]

For questions regarding the generation or flow of electrical charge.

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40
votes
7answers
11k views

I was thrown into the middle ages, how do I power my time machine?

I forgot to charge my time machine and now I'm sitting in medieval Europe and need to recharge the batteries. Luckily, those are only car batteries and not the old plutonium powered ones. What's the ...
3
votes
1answer
48 views

What are short-term defenses against massive elegtromagnetic disruption?

A society comparable (in resources, technology, economics and politics) to present day Earth is gearing up for war. There is a weapon which causes massive, widespread electromagnetic disruption. Like ...
10
votes
2answers
285 views

Electric Universe: can an object be pinned at a solar pole with magnetic flux?

In an Electric Universe, where space is plasma soup and electromagnetism is the "magic" that can defeat the laws of physics, all stars are connected by invisible Birkland currents. Picture the rope ...
3
votes
3answers
147 views

Could the sun reach a state that emits constant solar flares and CMEs?

Basically, I want to create an apocalyptic event that knocks out most electricity, for a long time, hundreds of years at least. Electronic devices that do work would be extremely rare, and people ...
8
votes
3answers
370 views

Would lightning strike a flying island?

Looking for someone with meteorology/physics knowledge to help with this one. Let's say I've got an island that floats in the sky--nothing special, these are a staple of fantasy these days. For ...
21
votes
7answers
5k views

Would a large number of people simultaneously turning on a load of 3 kW be sufficient to bring down the electricity grid across 500 sq km?

Sabotaging the electric network is kind of a well established scheme: find a node of the network, put some explosive on the pole and take it down (or the like). The network is gone for a while. Now ...
-4
votes
6answers
698 views

Is it possible for an AI to work in a computer without the power cord being plugged in? [closed]

As you can see, the AI is active on the computer without the use of a power cord. I thought about a possibility on how AI can manipulate electrons to generate electricity(creating its own power ...
1
vote
4answers
110 views

Energy Transfer Through Space Without Adverse Affects

Perpetual motion doesn't exist... or does it? In space planets continuously spin around stars for trillions of years due to inertia and gravity balancing each other out. What if a race of brilliant ...
40
votes
10answers
9k views

Do all devices go out at the same time in an EMP attack?

Is there an order in which different kinds of (unshielded) electric devices go out in the event of a high altitude EMP? For example, first small gadgets, then electric vehicles, then grids. Or do all ...
6
votes
4answers
310 views

How to power thin contact lenses that let us browse the internet?

Immediate to near future, we are talking about single digit nanometer size transistor and light emitting diode. That's actually very small, you can't see it with a conventional microscope let alone ...
9
votes
4answers
4k views

For how long would electricity and internet be avaliable if all but one human on Earth were gone?

In my story all humans except one vanished suddenly. This one received the gift of immortality and is now alone in this world. Considering that the world is identical to ours. How much time does this ...
26
votes
8answers
4k views

Extremely compact nuclear reactor?

Realistically, how small can a nuclear reactor get (fission or fusion)? Truck sized? Table top? Mr. Fusion? AAA Battery? Are there other physical limits when we include human safety issues? Let'...
3
votes
1answer
178 views

Using electricity magic for superhuman speed

Some back story: So in the first in a line of inevitable boss battles my band of misfit heroes must face a humanoid enemy that consumes humans (by dissolving them in a cocoon of acid, which he then ...
13
votes
3answers
2k views

How do you power a cyborg?

In this answer about how to design the ideal cyborg, I said: ... Use electric tissue to power the machines. Cyborgs need some way to generate electricity when mechanical parts are involved. ...
4
votes
2answers
482 views

Humans as a power source [duplicate]

In the second episode of the first series of Black Mirror, "Fifteen Million Merits", humans' primary way of earning money is by powering pedal-driven electrical generators. Would human-powered ...
3
votes
1answer
128 views

What material could be used for circuitry used for interstellar flight?

I plan to write a story about a large number of space probes that are equipped with artificial intelligence and told to explore star systems and travel between them. These probes are not equipped with ...
4
votes
4answers
484 views

How can nuclear power produce -electricity- in space when energy must be converted differently?

Hear me out before you downvote; It's not as simple as it seems. On Earth, nuclear reactions produce heat energy. This is used to heat water, creating steam, powering turbines connected to generators ...
7
votes
2answers
162 views

Which voltage and frequency would be selected if there were no legacy issues?

Which voltage and frequency would be selected if there were no legacy issues? I can easily find how selection of electricity frequency and voltage was based on backward compatibility and quite ...
5
votes
2answers
517 views

Powerfish - how to use fish movements to power tech

Powerfish - on! I'm thinking about writing about a world where fish are used like lab rats, to power technologies. But I'm thinking about worldwide use. I placed my TV on my fish tank yesterday. The ...
1
vote
3answers
613 views

Hand Held Coil Gun cannon - Enough to rip a giant robot limbs into pieces

OK, so my main character has created a hand held coil gun cannon, the whole coil gun is 6 feet long with the barrel taking 5.5 feet of the said coil gun. The coil gun is equipped with recoil ...
2
votes
3answers
246 views

Underground City Design: All Solar Electricity

I am working on designing an underground city for my Kepler Bb story. I am now at the civilization phase and there are 100 people(Not including Robin, Lisa, Alma, and possibly 1 or more little ones) ...
1
vote
5answers
340 views

Is it possible to erect an electric fence in medieval period?

Set between 13th to 15th century C.E. could the people in the medieval age had come up with electric fence to protect the castle? As long as direct unprotected physical contact would produce a fatal ...
4
votes
4answers
259 views

Could traffic lights work underwater?

Is it possible for traffic lights to work underwater? Even for a short period of time. I understand that any electronics inside would short-circuit pretty quick. But could it be protected by the ...
6
votes
3answers
236 views

A planetary dynamo

Is it possible for a planet and moon to generate electricity in some way? Could a combination of magnetic fields and iron content in the crust or core produce electromagnetic induction due to the ...
26
votes
10answers
10k views

Advantages of an electrified sword?

So I want my rabbits to have lightning swords. Well it's not literally a blade of plasma but just a metal sword that has a current flowing through it. What kind of advantages would the weapon bring ...
2
votes
1answer
254 views

How can my humanoid race, which can release electricity through their hands, use electricity to stun animals of any size?

I designed a humanoid race with bio-electric organs along the arms which release electricity through the hand to the victims (it has to be done in direct contact). The electricity released has to be ...
4
votes
4answers
940 views

How could electricity stop working?

I'm working on a science fiction story in which electricity had been wiped out from earth. I need, though, to sort out how it happened. What I look for Humanity can no longer use electricity as we ...
1
vote
2answers
836 views

How would civilization change without electricity? [duplicate]

Let's say that starting today, electricity "stops working" (I'd like to sort the details of that in a different question). The case is that somehow electricity can't be used anymore. How would ...
22
votes
8answers
9k views

Metal Armour vs lightning strikes?

So I'm thinking about having my race of lightning wielding rabbits wear metal armour. The first one that came to mind was gold. And then a quick Google search later told me gold is one of the best ...
2
votes
2answers
4k views

How would have Nikola Tesla's ideas changed the world [closed]

If Nikola Tesla ideas would have been the one behind the electrical revolution rather than those of Edison how would this change the world we live in. Assuming that Thomas Alva Edison also exists but ...
4
votes
2answers
168 views

How much electric charge are dermis cells able to contain?

I'd like to justify a lightning man in my world, and I have a theory that by some sort of magic, his cells in the dermis (middle layer of the skin - okay, for simplicity, don't count hair) are able to ...
7
votes
6answers
1k views

Can you harness electricity without metal?

Can you make devices that produce and use electricity like power supplies, motors, light bulbs, etc. in a society without metal? Not just metal isn't in the device, you can't even use metal in the ...
2
votes
2answers
527 views

If we separate the Atlantic and Pacific oceans and install a generator in Panama canal, how much electricity do we get?

Could one (and how much) generate electricity by building a wall connecting: South Africa to Antarctica South America to Antarctica Northern Canada to Northern Greenland Northern Greenland to Russia ...
6
votes
4answers
341 views

What would be the immediate effects of no electric current?

In a setting I'm considering, all electric current (not related to the sodium pump in biology) stops on Earth at our current technological level. So what would the immediate effects of all electric ...
13
votes
10answers
4k views

What power plant is the easiest to reboot and run by Average Joe?

Question inspired by questions about best power source for zombie apocalypse and mine question about rebooting the nuclear power plant: Setup: Deadly virus wiped out 80% of population. We are ...
16
votes
11answers
10k views

What production of power would be most efficient in a zombie apocalypse?

In a zombie apocalypse scenario, power is important. It charges your lights, powers your communication, along with the possibility of defensive use as in tasers and electric fences. Electricity can ...
2
votes
0answers
64 views

Ideas for a hero using lightning to incapacitate captors - on a ship in the middle of an electrical storm [closed]

I think it's mostly in the title - but I have my team of 'good guys' who come across an enemy ship in a mother of an electrical storm. They will get captured by the bad guys, but I would like the hero ...
2
votes
2answers
236 views

Would a person with high voltage outfit (or skin) be able to fly?

Assume there's a human being who can keep a strong electric potential near to (or on) his skin. Is it possible to use the air-ionizing property, or similar ones solely or mostly solely based on this ...
3
votes
2answers
1k views

Can electric eels power my phone?

I'm going on vacation, and browsing through my texts on the latest iPhone. Uh oh, my private airplane, which for some stupid reason has no tracking devices, crashes onto some undiscovered island. ...
1
vote
3answers
7k views

Would it be possible for someone to develop a tolerance for electric shock? [closed]

I understand that it is possible to gradually develop a tolerance to a substance by consuming small amounts of it to the point of being unharmed by an amount of the substance that is deadly to most ...
0
votes
0answers
43 views

Could a weapon utilize artificial lightning? [duplicate]

We all know how lightning works: The clouds have a strong static charge and release that charge towards the ground. But could it be used as a weapon? Would a weapon of the following description work? ...
19
votes
6answers
35k views

What would happen if electricity stopped working?

Blackouts happen all the time locally, but what would the implications of a world-wide, indefinite blackout be? Here is a spark from the fire of what could happen: (obviously) lights go out no air ...
2
votes
3answers
869 views

Traveled back in time; How would one get as strong a magnet as they could?

The general concepts of electricity are actually pretty simple to grasp. You've got a magnet You've got copper coiled around the magnet, (or iron, or some other Ferromagnetic material) The copper ...
11
votes
3answers
2k views

How could an underwater civilization develop electricity?

Electricity pervades our daily lives, and makes possible a lot of technological achievements. Harnessing it helps the development of any civilization. The thing is, water - especially sea water - is a ...
6
votes
5answers
1k views

Modern technology during WW2, can it be powered safely?

Imagine someone from the modern day somehow gets transported back in time around the same time of WW2 without warning ahead of time. He has with him a laptop, graphing calculator (and a hand full of ...
6
votes
2answers
438 views

How could an organism produce energy from electricity?

So I've created this planet that's about 90% the size of Earth, orbits a binary yellow dwarf star and has an extremely electrified atmosphere. Cloud plumes coming from volcanoes contain various ...
5
votes
2answers
324 views

What could cause a planet to be highly electrified?

I've created a small planet, about 90% the size of Earth, which orbits a pair of twin dwarf stars and is Earth-like in many respects. This planet's atmosphere is highly electrified, with lightning ...
3
votes
1answer
234 views

What would make Electric Airlines possible? [closed]

Let's face it: Fully electric car was total sci-fi just 15 years ago. And the fact that it could drive itself was totally unthinkable. With that in mind, lets talk about next logical step: What ...
4
votes
5answers
2k views

How useful would a electricity-over-water gun be?

As water guns today can send a jet of water quite a distance away, I wonder how useful would a gun be, that sends an electric current over a jet of water to its target? By useful I mean: Gotta be ...
3
votes
1answer
364 views

What would be different in a world with insanely cheap electricity? [closed]

So, year is 2015 and insanely cheap way of creating electrical energy is discovered a few years ago. The details are not relevant but we can assume it's something like cold fusion and that the source ...