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Questions tagged [nuclear]

Questions about atomic nuclear phenomena and their effects on the world. For heat and power generation applications of nuclear phenomena, use [nuclear-power]. For weapons relying on nuclear phenomena, consider [weapons] and [weapon-mass-destruction]. Compare [radioactivity], [weak-force] and [strong-force].

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15 views

Stopping a nuclear missile?

Would you be able to stop a nuclear missile by hitting it with a liquid nitrogen missile?
6
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2answers
241 views

What does the physiology and biochemistry of a vacuum adapted post-human look like? Part 4: Movement

I am a post-human adapted for permanent life in vacuum and micro-gravity. How might my physiology and biochemistry overcome the following challenges? Please note I have a strong cultural aversion to ...
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8answers
744 views

Losing Knowledge

Is it plausible to create a world in which the people who live inside it developed technologies like the ones we had in WW2, but after their progress came to a halt they forgot their knowledge. ...
23
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7answers
6k views

How much alteration would be needed for the Cuban Missile Crisis to go nuclear? [closed]

My story takes place centuries in the future, in the year 2567. Over 600 years ago, during 1962, an all out nuclear war broke out. Most modern day historians believe it to have occurred in autumn, but ...
6
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4answers
168 views

Effect of nuclear fallout on glacial ice

I'm working on building a post nuclear war society in a nuclear winter where northern countries have risen to dominance through a combination of being non-primary targets in the nuclear war and having ...
2
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2answers
249 views

How long would it take to be able to live in New York after a nuclear bomb?

If a 50 megaton nuke was dropped in Lower Manhattan, New York, how long would it take for people to be able to live there again? The bomb detonated on the ground. My definition of live is to breathe ...
29
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16answers
14k views

Best places to be on Earth when an all out nuclear World War III breaks out?

This is a world building question in a preventative context because those people or countries would be left fully functional while others gone and the safe areas is where the world building would ...
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1answer
98 views

How to disable all long range communications planet wide?

I'm wondering about ways to effectively disable all long range communications planet wide. I've looked into nuclear/emp for disabling sats, but what about other forms of long range comms? Doesn't have ...
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1answer
260 views

How long would a nuclear war likely last? [closed]

In my world, the United States, Soviet Union, European Union, and Populated sections of Asia are all involved in a nuclear war. Their are about 32,000 warheads fired, an in total, 3,000 megatons of ...
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2answers
159 views

How to explain why there was no military presence after the apocalypse? [closed]

In the year twenty-hundred and sixty eight (2068) commie demons rose up from the underground and scorched the United States, and the United States Kingdom demons rose up from the underground and ...
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3answers
274 views

How can the human race disappear in a few days? [duplicate]

Is it possible to eradicate the human race in one week? And if yes, by which way? Of course, the human race should do everything to survive. What could be more powerful than our will to survive? 1. ...
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0answers
55 views

What would be the effects of a worldwide nuclear disaster? [closed]

I have a dystopian project coming up and I would like to ask for some advice. What would be the effects of a worldwide nuclear disaster? Some answers to include are: How long until humans would be ...
3
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1answer
227 views

What will happen to a spent nuclear fuel pool without routine maintenance?

Assuming the human population is decimated (how doesn't matter) such that nuclear power plant maintenance is impossible. What would happen to a spent nuclear fuel rod pool? It seems to me that ...
2
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6answers
572 views

Rebels beating nuclear armed govenment with aircraft carriers [closed]

In an anti-gun debate (I was pro-gun, which is relevant), I used the example of an hypothetical ex-democracy which allowed guns (like the US) and then turned authoritarian with theological ...
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2answers
191 views

How would societies change after nuclear war?

So, a nuclear war happens and wiped out 80 % of humanity, along with all the cities. How would societies change after nuclear war? There are no mutants. There are about 150 raider gangs in North ...
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12answers
6k views

Would animals really mutate in the post-apocalypse?

So, in an alternate universe, Soviet Union never falls, and in 2068 a nuclear war happened. About 32,000 nukes were detonated in American, Soviet, EU, and Chinese cities. WW3 lasted about 5 hours or ...
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3answers
559 views

What countries would most likely be targeted in a total-nuclear war? [closed]

In an alternate timeline, the Soviet Union doesn’t fall like it does in our universe, and the US and USSR stay enemies until the year 2068, when nuclear war breaks out between the United and the USSR. ...
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5answers
504 views

Why would a group chose to remain raiders?

In a post-apocalyptic world, survival is often difficult. In the first few decades after the apocalypse, living in permanent settlements was dangerous because of roaming creatures and bandit gangs, ...
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2answers
237 views

How big of an asteroid could all the nuclear bombs of the world move? [duplicate]

More than the threat of nuclear war, we should worry more about asteroids destroying the Earth. For the first time we could save ourselves from that happening. Take all the nuclear missiles of the ...
3
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4answers
290 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 ...
2
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2answers
230 views

What modifications would be needed to transform a mineshaft into a bunker?

There is a nuclear war between the Soviet Union and the USA in 2068. The war lasts about 4 hours but destroys most of the northern hemisphere and parts of Australia. But, the Soviet military relocated ...
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6answers
282 views

Why might aliens want to start the apocalypse? [closed]

There is a group of aliens, called the Erubians, who often go out to study and experiment on species less developed than them. They are a type 2 civilization, and their main goal is to study all ...
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2answers
221 views

Can fission create a steady thrust with less weight in space? [closed]

I have seen where atoms can be positioned one at a time to make a picture or write something. Can that same method be used to transfer an atom or atoms at a time into a nanometer width proton beam? ...
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2answers
203 views

How much would it cost to build 100 fallout shelters? [closed]

In 2068, before a nuclear war starts, a company backed by the federal government decides to build a bunch of shelters to protect some of the population from the coming apocalypse. My question is how ...
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1answer
151 views

How could we produce electricity thanks to antimatter?

Imagine we had an easy way to produce antimatter, we could use it for interstellar travel, deadly weapons or more; but I've thought: How could we use it to produce electricity? As Antimatter ...
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1answer
61 views

Radio-active elements in the Earth`s core [closed]

What would happen if the earth`s core was made of radio-active elements? No website is giving the answer
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1answer
167 views

Weak force life

I was doing some research on how to design scientifically possible alien when I came across an interesting section on different section on metabolisms. I found it very interesting and read about the ...
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1answer
107 views

Manipulating decaying positron-emitting isotopes for positron “mining”

In a previous question, it was established that antimatter could be "mined" through positron-emitting isotopes. By gathering positrons from decaying positron-emitting isotopes (potassium-40 and ...
26
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12answers
5k views

Spaceflight without transistors and nuclear power - how to bend the history of physics?

As stated in the topic: I would like to have Project Olympus-style space stations served by Apollo-like spacecraft in a world where neither nuclear power (and weapons) nor transistors were developed ...
4
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2answers
493 views

Could someone survive a nuclear blast wave at the bottom of a pool? [closed]

I would like to have a character survive an atomic bomb as close to ground zero as possible. Using this handy tool it seems that a 1 megaton bomb has a fireball radius of 1 km, a blast wave radius of ...
1
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1answer
159 views

Nuclear holocaust survival? [closed]

Okay, so I'm writing a story about a character in one of the rebuilt cities of the world about 2000 years after a mass nuclear war that took place around maybe 100 years from now, a war that destroyed ...
3
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6answers
291 views

Transmutation from thin air. Literally(ish)

There are many stories of converting one element into another (such as the story of the Philosopher's Stone), but to actually mutate one material into another (at least with our our current understand ...
22
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7answers
5k views

How would nuclear fallout affect the oceans?

I'm trying to build a setting in which humankind would have no other choice than to live underwater to survive. Suppose there was a nuclear war in which a huge part of the human population died, and ...
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3answers
254 views

Ways to significantly reduce critical mass for U235, or make U238 fissile?

If I manage to increase the neutron generated from fission reaction by 100 times, will that reduce critical mass of U235 to 1/100? Similarly, if I can increase neutron's energy, will it make U238 ...
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4answers
407 views

Could someone use a nuclear weapon to destroy the universe?

Bear with me. I have a villain who wants to get ahold of a nuke, except I'm not sure why exactly. I think he thinks he can create a singularity that would swallow up the entire universe (which believe ...
25
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12answers
6k views

What could cause a post-apocalyptic, rapid desertification of vast areas of the world, similar to the land in Mad Max: Fury Road?

I apologise as this will be vague - but I am building a world set in the future (late 21st century) and looking at realistic ways for rapid desertification of huge land areas, say America, and ...
27
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8answers
8k views

Is it safe to grow and eat food on post-nuclear-war land?

Follow-up of Could the entire world have been destroyed by the existing nuclear arsenal in 1962? Is it safe to grow food on land that was hit by nuclear bombs? Or will such food kill/fatally sicken ...
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2answers
197 views

How can one convince someone from the past that one really can transmute elements at-will? [closed]

The alchemists of legend and yore sought to transmute elements, among other things -- the classical "lead into gold", for one. Nowadays, we've figured out the nuclear physics required for ...
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5answers
6k views

Could the entire world have been destroyed by the existing nuclear arsenal in 1962?

Considering the nuclear arsenal that existed in 1962 during the Cuban Missile Crisis, could it have destroyed the entire world, following the events below? Edited question a bit: Considering the ...
6
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3answers
243 views

Apocalypse design help. Is there any life-sustaining atmosphere which an atomic blast could ignite?

I've read a few answers here about how Earth's atmosphere is impossible to ignite with an atomic bomb. Is there some atmospheric mixture which could be both life-sustaining and able to ignite into a "...
3
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1answer
289 views

Neutron bomb vs Nuclear Thermal Rocket (NTR)

A spaceship like this is traveling in the space: Let's say, that its 100 meters long. Its crew module have 5 cm of lead shielding, the 80 m long propellant tank is full of liquid hydrogen, and at the ...
4
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3answers
988 views

How would a human species evolved to survive high radiation take a new nuclear strike?

Humanity has been exposed to prolonged nuclear radiation for thousands of years. In the past, hundreds of nuclear bombs dropped; then nuclear warfare ceased for thousands of years. Assume that humans ...
10
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1answer
222 views

Nuclear rockets and EMPs

Nuclear rockets, or as I like to think of them, "half way between a continuous small atomic explosion and reactor whose front fell off". There are many variants, and my aliens are using relative ...
27
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5answers
5k views

Practicality of a thorium-powered, superheated-steam car?

At the beginning of the 1900s, the Doble Steam Motors Company built steam cars. Their engineers solved many of the problems steam cars had until then by using superheated steam and a condenser to ...
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4answers
240 views

World governments shutting down their nuclear power plants after Chernobyl?

What if in an alternate universe after the Chernobyl incident, the world governments decide to shut down their nuclear power plants and if so how would that affect society?
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4answers
651 views

What if the Trinity test had ignited the atmosphere? Could we survive?

In the early days of the Manhattan project, there was a brief scare, based on some calculations by Edward Teller, that an atomic bomb would ignite the atmosphere. They later redid the calculations and ...
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1answer
184 views

Could nuking the poles of exoplanets or planets in the solar system be an effective method of terraforming them? [duplicate]

To cause a nuclear winter (where the emissions of the nuke block out the atmosphere and create a long lasting period of winter) you need to set off only 100 nukes in quick succession. This made me ask ...
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2answers
257 views

What would be the implications of the Great Pacific War I created for the remainder of the 2020s and the next decade? [closed]

Well, I created this military conflict called the Great Pacific War as a scenario to simulate a hypothetical direct confrontation between the States and China, and before I ask my main question, I ...
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1answer
654 views

Could a nuclear war cause the majority of Earth to be uninhabitable for hundreds or thousands of years?

I understand that nuclear bombs don't have lasting radiation effects on the area that they're dropped. Examples of this are Nagasaki and Hiroshima, where less than a century after an atomic bomb was ...
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4answers
7k views

How many people would survive the nuclear winter after a full-scale nuclear war, and where?

Could anyone could survive a nuclear war and all that follows? I have read many things saying they would, and read other science-based answers, but they all talked about a nuclear war that was ...