All Questions
Tagged with nuclear-power nuclear-weapons
10
questions
10
votes
10
answers
3k
views
Everything has a tiny nuclear reactor in it. How much of a concern are illegal nuclear bombs?
In this world, basically every structure (building, factory, car, etc...) has a tiny nuclear reactor in it, and operates like a nuclear submarine. There isn't even an electrical grid; every structure ...
- 13k
3
votes
3
answers
524
views
How effectively recover enriched uranium from nuclear impact site?
In the world(not Earth, but eath-like), I am building there was a nuclear exchange recently. Recently, I mean 25(subject to change) years into the past. I am describing a small clump of cities near ...
- 1,138
2
votes
1
answer
160
views
How much thermal energy, in joules per centimeter squared, is required to ignite common aerospace materials?
How much thermal energy, measured in joules per centimeter squared, would be required to:
melt (or ignite, if possible) commonly-used commercial airliner paint
melt (or ignite, if possible) commonly ...
- 13.1k
2
votes
6
answers
592
views
How would the sudden disappearance of nuclear weapons and power plants affect Earth geopolitics?
Backstory
The setting is Earth in 2021 OTL. An invisible space station of an arbitrarily advanced alien civilization is orbiting around Earth keeping watch on humanity. The aliens have determined that ...
- 1,191
9
votes
3
answers
778
views
If people were the size of squirrels, would we ever have developed nuclear fission?
If people were about 1 foot tall and weighed about 1 pound, would we ever have made a reactor or an atomic bomb? Because critical mass doesn't change, the scale of the project to mine and process ...
- 5,559
7
votes
1
answer
313
views
How long can the entire civilization be powered by converting all nuclear arsenal into commercial reactor fuel?
Imagine a miracle happened and all leaders decided to wind back the minute hand of the doomsday clock and passed a bill that can transform all kinds of nuclear weapons into fuel for power plants, ...
- 48k
1
vote
3
answers
968
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What would be the best way to power a mecha? [closed]
While searching around, I kept hearing that fusion was a good choice, but how best to covert the energy to electricity was an issue.
However, during my research, I came across this:
Photon-...
- 415
0
votes
2
answers
392
views
A world where nuclear fission does not produce radioactivity [closed]
I think the title explains it, but I am interested in how a world might differ from our own if fission had no radioactivity associated with the fuel, process, or waste/byproducts. The obvious answers ...
- 1,171
5
votes
4
answers
913
views
Nuclear terrorism 4 billion years ago: Was natural uranium enriched enough to create weapons without need for further enrichment?
Natural uranium (NU) is a mixture of about 0.7% $\ ^{235}U$ (fissile) and 99.3% $\ ^{238}U$ (non-fissile). To create uranium-based nuclear weapons NU has to undergo a process called enrichment in ...
- 511
25
votes
6
answers
5k
views
Would a civilization on a planet with no natural Uranium-235 NEED to first achieve fusion before it can build nukes?
If a much older solar system - say 10 billion years with a slow burning star - would sprout intelligent life at around that age, given the half-life of U-235 and natural Uranium reserves, according to ...
- 261