# All Questions

20,603 questions
2 views

### Are handheld electric weapons realistic?

I want to use Teslapunk weapons in my semi-realistic science fantasy RPG that behave somewhat like flamethrowers, in the aspect that they fire out cone of electricty. It would obviously use a ...
6 views

### Hello building a underworld with a royal court that rules over it [on hold]

My story is about a royal court that rules the underworld, the place between our world and heaven or hell. My question is, if it is a underworld where everyone is supposed to be dead, would there be ...
32 views

### Is it possible to have a strip of cold climate in the middle of a planet?

Would it be possible to have a region on a planet that is not near its poles that has below freezing temperatures most of the year, while having more temperate regions both above and below it? If so ...
20 views

### Deities vs You /Liquid Anon/ What'd be the most optimal carrier fluid comopsition?

Liquid Anon is my little OC, a total badass, with a tragic backstory, and the ability to assume any form and color at a whim. Donut steel! So, more about that The basic idea is that Anon's body is a ...
17 views

### By any scientific/pseudo scientific means could plasma be used to increase the lifespans of living creatures?

In my semi-realistic science fantasy RPG, I want there to be a newly discovered chemical element that is perfect at generating plasma for use in various futuristic weapons and to increase the ...
25 views

### Is it possible to fight like Sanji (from One Piece)

In the anime "One Piece" there is this character called Sanji. He is a cook, but the most unique about him is his fighting style, he only uses his legs and feet to attack and block. So now my ...
78 views

### Weaponising Implosion instead of Explosion

Explosions are really messy - they cause debris to be spread over a wide area. They may also cause collateral damage. I want to use implosion instead. I wish to use a force-field sphere that contains ...
59 views

### Preventing the Big Bang

I travel back in time to the Big Bang in my time machine. I am equipped with all the present day equipment I need. I locate the infinitesimal 'point' where the Universe would come into existence and ...
20 views

### What would be the ideal way to weaponize plasma?

Plasma is a relatively common weapon in science fiction, with weapons that fire magnetically-bound superheated plasma or melee weapons that hold plasma in a containment field to burn through just ...
48 views

### Why would an omniscient immortal needs to record history?

There is a powerful entity, omniscient, omnipotent and omnipresent that came into existence since Big Bang. The entity do not interfere with the order of the nature but to observe it unwinds in the ...
66 views

### How would ocean currents work with a gulf that's closed to the equator on both sides?

I'm running a D&D campaign and am using a modified map of Venus for it that shows what Venus would look like with similar amounts of water to Earth. The problem I'm running into is mapping the ...
36 views

### Tides on a Super Close In Moon

I have a moon covered in liquid water that orbits a super-Earth very closely. As you might imagine, the tides are incredibly strong on this moon. However, it is tidally locked and so does not ...
44 views

### Life on other planets via nuclear signal

A nuclear explosion in space? Directing a nuclear explosion is difficult even in theory, but is it possible to direct one in space, with a trajectory and width of a significant diameter and wavelength ...
39 views

### Modern Conveniences in a dystopian anarchy [on hold]

So for a story which I am writing, I want to have modern conveniences and utilities in place (e.g. Youtube, Amazon, stores, things of that nature). However, it is a post apocalyptic world with no ...
28 views

### How to protect astronauts and spacecraft from solar flares on long space journey?

Background I have a spacecraft traveling from one planet to another, say from Earth to Venus. The journey will take at the least several weeks. During this time, the sun will emit a number of solar ...
1k views

### On a tidally locked planet, would time be quantized?

Assume a planet that always presents one side to the sun. No moons. The orbit of the planet around the star is essentially spherical, very minor and undetectable aberrations. The orbital period of the ...
158 views

### How would a Type I civilization not cook itself?

A type 1 civilization is defined as a civilization that can utilize the maximum amount of energy equal available to its entire planet, roughly 1017 watts for Earth. This is equal to the amount of ...
89 views

### How far away from a Sol-class sun could a planet be and still be habitable?

In my galaxy, I need a planet that is far enough away from its star to be relatively cold compared to Earth, but not so cold that liquid water cold not exist. The planet has 2 continents, 1 northern ...
32 views

### Biological touch based high bandwidth communication

My alien race is supposed to have the ability to communicate a lot of information extremely fast, more akin to uploading something to your partner's mind than telling him. This should happen via ...
77 views

### Other Mouthparts For Aliens?

What other kind of mouthparts might an alien (intelligent or non-intelligent) have besides the typical jaw with teeth or mandibles? To avoid being too broad a subject, let's assume the aliens need to ...
59 views

### How can various kinds of animals develop a form of Inter-species coordination between each other?

Cats in New York City are an invasive species that are a plague to the animal kingdom. It is well documented that these bloodthirsty psychopaths are responsible for the murder of billions of innocent ...
39 views

### High-Technology Civilization and Flying Mounts (No Magic/Fantasy) [on hold]

TLDR: What does technological progress look like if there are flying Riding Animals available? Edit: I will provide some suggestions below. Edit: Its not about "creating" a lifeform, they already ...
62 views

### What are some substances that could be considered food but are never eaten? [on hold]

Im looking for some examples of substances which in a radically different cultures could be considered as food, but which are not (usually) eaten. Sure, we eat shrimp but not cockroaches. That’s an ...
65 views

### How do I create costs of living for people of different incomes in a society? [on hold]

Something tells me costs are a bit relative based on location, at least for things like houses. So if my society or nation state is not based off of America it may have different homes and different ...
176 views

### I want to build a flat Earth, for real

A planet recently discovered was explored and proved unworthy of terraforming: It is mostly made of carbonaceous minerals, classifying it as a carbon planet. However, one of the explorers does not see ...
49 views

### How would humans survive being on a rock formation in the middle of the ocean? [on hold]

You're just walking down the street not expecting anything when you suddenly black out and wake up on a small rock formation seemingly in the middle of the ocean. Looking around you see four other ...
94 views

### How would an Earth-like world that is packed solid work?

By packed solid, I mean it has very fast growing vines and bushes everywhere like on non-desert living land plus lead crud and hidden small holes so movement is severely restricted. Similar on ...
80 views

### Gunpowder in the 15th-16th century [duplicate]

If smokeless powder was already invented then and machines to help make rimfire cartridges, could a sub/light machine gun be invented?
196 views

### What kind of sports would be possible in zero to low gravity?

The Hegemony wishes to organise not only terrestrial games within the inner colonies, but has also wished to establish major sporting events for the other colonies in low gravity environments on top ...
114 views

### Keeping GHz wireless RF out of our heads without stopping the internet?

Premise: Neurologists found that GHz wireless RF had modest but quite negative effects on people's brains. Subtle collective effects in neuronal firing patterns across the brain due to interactions ...
135 views

### What would sports be like in a dystopia? [on hold]

I remembered Ready Player One's dystopian setting, and then wondered what would sports be like in a dystopia? This theoretical dystopia is a world that has been drained of most of its resources, like ...
55 views

### how would the osmoregulatory and excretory systems would be for a flying human [on hold]

How would the excretory and osmoregulatory systems be for a flying human?
2k views

### Biological Blimps: Propulsion

A while back, I asked this question about the plausibility of giant floating whales and received an excellent and high-scoring answer from Dubukay demonstrating the unfeasibility of the idea. However,...
180 views

### Stealthy and hard to sink marine drone made out of… fiberglass and styrofoam

OK, the weapon idea is the following: general shape similar to the drone on this picture modular armament, in default configuration with anti-ship missiles (but goes with torpedos, gun, mines, etc.) ...
239 views

### Can you survive by growing and eating your clothes?

On Blue Planet 2: The Deep (at least, that is the title in the US version), there is discussion of crabs that grow bacteria on themselves as a food source. In the show, they kind of looked like they ...
5k views

### How could a planet have erratic days?

I want to describe a world where one doesn't know how long the day will be. It can be anywhere between 18 and 30 Earth-hours. Would such days be possible in our reality?
91 views

### Calculating the weight of different sized humanoids

In my world, I have relatively robust humanoids as the focal human sub-species, and a number of other human subspecies that are more gracile in build. I wanted to work out roughly how much they would ...
58 views

### A four about time [on hold]

If time is don't exist in starting before the universe begain.the time is that the reaction of heat on an object the thing start changing itself this change we represent it as time.the famous theory ...
106 views

### I am designing a quantum levitation gauss rifle for a novel that is powered by its own neutronium slugs. I need help with specifics [on hold]

My idea us that through what can be defined as reverse tron lasers we have infinite neutronium and through an equilibrium of quantum levitation, a single massively dense object can offset its ...
3k views

### How many people need to be born every 8 years to sustain population?

So I'm doing some worldbuilding for a small, isolated village on the coast. The winters are harsh, but making sure everybody has enough food generally isn't an issue because they have good trade with ...
182 views

### What would happen if the boiling point of a section of ocean was lowered to 5C?

Suppose, that in a particular area of the ocean on an earth-like planet, all water molecules are transmuted into an exotic variety of $H_2O$ that is identical to normal water in every way except with ...
67 views

### Could the shape or geography of the continents be dramatically changed in a roughly short span of time? [duplicate]

I’m aware that the continents and the tectonic plates they reside on drift, but for there to be any noticeable change in their shape or geography takes millions of years to occur. Is there a known way ...
206 views

### How can ruler support the invention of useful things?

Good rulers support invention of useful things. But this question has two sides. Support of invention Prevention of fake inventing Basis: Many inventions arise as side-effects of searching for ...
54 views

### on sentient reptiles/ectotherm behaviors [on hold]

so, I was searching and reading things about reptiles trying to build a guideline for any kind of cold blooded peoples/aliens I still have a hard time finding precises idea on how temperature ...
263 views

### How could a silver sword give off a golden glow in the light?

Now, I am not talking about a golden glow that overtakes the sword itself. I'm not looking for a Lightsaber. I'm talking about a sword that is silver in color giving off a golden reflection (or ...
116 views

### Steam-Assisted Victorian Engineers - Why the secrecy? [on hold]

Background Isambard Kingdom Brunel FRS 9 April 1806 – 15 September 1859, was an English mechanical and civil engineer who is considered "one of the most ingenious and prolific figures in ...
231 views

### Is it possible to demonstrate being God without using any power? [on hold]

God is on Earth and is trying to convince someone without using any power. How? A power is anything that no human can do.
882 views

### A society in which the “family system” is similar to those of lions or monkeys

I envisioned a world where people are not bounded by marriage and females are free to choose those who they deem "accomplished" and have offspring with him. The males "occasionally" interact with the ...