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I’m creating an Earth-like world where the sun appears blue to people from the planet’s surface. I think I’ve narrowed down the cause of this effect to the presence of 1 micron particles in the atmosphere, which would scatter and absorb the longer wavelength red light from the planet’s sun. This ... |
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So, having rejected mind uploading in their quest for immortality, the people of my worldbuilding project now seek to develop brain transplanting.
The main problem is immunorejection; if you simply chucked a brain into an donated body, then said body’s immune system will attack it and the brain will die,... |
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There exists a polymerization spell that allows distinct animals to combine with each other, creating an entirely new creature. The beasts in question are held in transumutation circles linked by ley lines and surrounded by specific ingredients to make the spell work. Ingredients are specific to the crea... |
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**This question asks for hard science.** All answers to this question should be backed up by equations, empirical evidence, scientific papers, other citations, etc. Answers that do not satisfy this requirement might be removed. See [the tag description](/tags/hard-science/info) for more information.
How ... |
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For a SciFi project I work on I have a space-station orbiting earth that uses an 8 hour 3 shift system for its staff. Each shift is assigned to one-third of the countries and organizations on earth - namely those that are facing the station during the ~8 hours of the shift.
The above premise requires the... |
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With the help of my allmighty *Handwavium* I want to change the biology of a human being so that this particular human being gets his eyes replaced with the eyes of a martial eagle. According to [Wikipedia](https://en.wikipedia.org/wiki/Martial_eagle)
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> Martial eagles have been noted as remarkable for... |
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In my story there has been an event which made the air toxic. Just a few breaths guarantees death.
What event could create such an atmosphere in an unfixable way?
The time is just before WW1. I was thinking some sort of large scale government experiments going wrong, but not sure what.
An idea I had w... |
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So, I'm trying to come up with my own world system where words like(for example): Magic, Alchemy, Sorcery, etc and have a specific meaning. Also being a(n)(for example): Alchemist, Witch, Sorcerer, Gypsy, Pagan, etc are all different things. I'm running the problem that I feel that one thing is not that ... |
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Is it actually possible in a 19th century setting to build horse-propelled, non-steampunk tanks?
This would mean armoured carriages with gatling guns and artillery on them, with several people sitting inside.
Also, how would could the horses and the person steering the carriage be protected?
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## Original question
Imagine we live in a society where humans are completely open-minded and rational about everything. They reason logically and are willing to debate to reach a consensus.
However, even their ultimate motivation is only benefit to themselves, just like us. They too have qualities like ... |
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Is it possible for humans to live on a world with the following conditions?
**Atmosphere**:
* 50% nitrogen;
* 30% oxygen;
* 20% carbon dioxide.
**Climate**:
* The rain in some areas is acidic. (Is there some factor other than air currents that affects the creation of polluted clouds and its rainfall?)
* ... |
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**This question asks for hard science.** All answers to this question should be backed up by equations, empirical evidence, scientific papers, other citations, etc. Answers that do not satisfy this requirement might be removed. See [the tag description](/tags/hard-science/info) for more information.
In t... |
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**This question asks for hard science.** All answers to this question should be backed up by equations, empirical evidence, scientific papers, other citations, etc. Answers that do not satisfy this requirement might be removed. See [the tag description](/tags/hard-science/info) for more information.
Quic... |
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Humanity is on its last lap. A once great empire has been reduced to a single Dyson sphere around the dying sun, and most of the matter of the solar system has already been incorporated into this last bastion of survival. Any activity which leaks energy out of the sphere is suspect, and only very rarely ... |
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The context is a spacefaring civilisation decides to dump its refuse and biomatter into space. Due to a technical error, the biomatter doesn't fall into the nearby star but instead finds a stable orbit around it. Or it finds itself in a lagrange point, maybe one which protects it from the star's solar ra... |
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So, I have a country in the making in my series that has a completely different culture than the rest of the world other than belief in a religion, Prophiatism.
Since the country is said to be so different and also is the heaviest place of belief in Prophiatism, almost to the point of it being a cult, c... |
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In a story I am writing there is a being with Superman level strength, flight, the ability to produce lasers, and survive in space. He has decided to solve the mineral crisis by finding and grabbing an asteroid and taking it back to earth so that it can be used to build lots of cool things and green tech... |
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The [Bay of Fundy](https://en.wikipedia.org/wiki/Bay_of_Fundy) sees the world's highest tides, with ocean water advancing and withdrawing as much as 20 meters or more within a single day.
[Here is a list](https://tidesandcurrents.noaa.gov/faq2.html#26) of the 50 tidal stations around the world with the ... |
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This one’s a bit of a stretch, so bear with me. The classic monster in table top games and video games alike: a monster that can imitate the shape of things (mostly treasure chests) to lure in people to eat.
For those who are unfamiliar with mimics, their classic natural form is an opaque brown amoeba th... |
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When a person dies, their soul doesn't ascend to the afterlife automatically. The soul builds a connection with its body while alive, and remains attached to that body in death. Through natural decomposition, the soul gradually loses its connection to the mortal realm. At some point, when the body decaye... |
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I have a world where remnants of [advanced ancient humans](http://tvtropes.org/pmwiki/pmwiki.php/Main/AdvancedAncientHumans) (tv tropes link) live among us, but we are not aware of them.
Is there some problem that people with mathematics more advanced then ours would be able to solve easily but we could... |
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Human's primary sense is sight. Therefore our maps include icons designed to represent various sights.
**Scale maps** include reference scales and accurately represent to the distance between the visual icons.
Scale / literal map
**Symbolic ma... |
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Pretty much every vehicle ever invented has been used for racing on at some point, so it seems likely that people would want to do the same in space.
However in space it doesn't really work the same way, the main problems being:
1. There is no real sense of speed. Can you even get the same thrill out of ... |
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The community reviewed whe... |
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In my story world, I was thinking about having glass structures built by a prior civilization to preserve information. The reason the structures would be made of glass would be because the glass the structures are built of are also used as a giant data storage device. Kind of like the glass etching techn... |
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I am building a world with islands floating in air, and I'm looking for solutions to loss of water from runoff/erosion (think rivers emptying off the side of the islands). The islands vary in size, with the smallest around the size of Manhattan, and the largest about half the size of Iceland.
A few limit... |
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Per [this question](https://worldbuilding.stackexchange.com/questions/118966/restricting-antimatter-practical-rather-than-legal-measures) I've been giving thought for some time to restricting the use of antimatter and it occurs to me that an object lesson in what can go wrong might go a long way to disco... |
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**Closed**. This question needs [details or clarity](/help/closed-questions). It is not currently accepting answers.
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Realistically, how could a parasite become sentient? It doesn't have to be one that can control it's host like a yeerk from Animorphs, but that wouldn't be a disqualifying factor.
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Realistically, unless the parasite can generate and perceive radio frequency signals, and therefore communicate '... |
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So in my questions about the intergalactic highway and simulated ship quarters I established a universe where the navy fights a cult of alien worshipers over star gates. 500 to 700 years in the future. I want the navy to have a “super weapon” that they can use to attack the cult’s heavily defended world.... |
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I am creating a universe based on medieval Europe and I was wondering how many types of currency would be needed for a medieval economy to work. Example:
* The US dollar uses cent, nickel, dime, quarter, half-dollar, and dollar.
* The euro coin uses 1, 2, 5, 10, 20, and 50 cents, €1, and €2.
I have been ... |
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Set on an icy world where weather forecast is alway blizzard everywhere, I am wondering how do modern day people commute if everywhere are buried under several miles of snow? What kind of transportation could easily navigate these snow en masse and how do they avoid collision and sinking on a busy traffi... |
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So, I was watching a funny movie about undead pirates when the realization hit me, I never once tried to create naval superiority for my Mary Sue. Well, guess I just do it now.
***Titanic 2: (n)Ice to meet you*** is the unholy offspring of [Project Habakukk](https://en.wikipedia.org/wiki/Project_Habakkuk... |
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it's my first question here, I'll try to be clear.
I'm creating a story where there is a steampunk style civilization that has to face advanced civilizations in planetary and spatial battles.
I'm trying to create a steampunk army able to fly in an Earth-like planet and in space.
I think a new power sourc... |
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In my world I have an advanced civilization whose technology is Magic based. Their civilization magic can be found everywhere though, it is found most commonly among the educated and Wealthy class, but even the most poor will be exposed to some type to Magic.
The only problem with this setup is that I f... |
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**Closed**. This question needs to be more [focused](/help/closed-questions). It is not currently accepting answers.
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How would the human body be affected if the oxygen levels on Earth suddenly decreased by 15 percent? This is instant. Not over time. How would we adapt? Would some people die and some not?
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If you mean it we lose 15% of current concentrations, to %17.85 it will be harder to breath we will have... |
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In this concept, a person is confined by a precisely-defined invisible barrier that causes extreme pain when any part of them crosses it. It affects only them, thus the source of the pain must be within them, but triggered externally. I'm thinking something like nano-sized GPS receivers (either organic/c... |
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I sadly couldn't find any answers to this question, probably because it's quite niche, so i'm posting this as my first question here!
The <https://en.wikipedia.org/wiki/HMS_Dreadnought_(1906)> was probably one of the most influential ships of its time, and pretty much paved the way for many of the design... |
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In my setting I have a species of anthropomorphs (basically humans) that grow from baby to full-size in the shortest time period possible. The babies are the size of human babies. How short can that time period get, and what modifications should their body/genetic material have to grow at an incredibly f... |
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In my world, there is a civilization with about 1800's-level technology. There is a nuclear accident in part of the world that they need to access. Is there a way for a civilization with this level of technology to protect themselves from radiation(even for a very short time?)
Edit for clarity: The main ... |
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Suppose a unicorn agreed to let a person ride/tame it for combat in battles, and assuming as a baseline, without any magic assistance, that the horn is made of a similar material to ivory, in the shape of a spiral, with a size range being a minimum of 12 inches and a maximum of 28 inches, how effective w... |
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Deep in space a colony ship continues to accelerate unaware of the volley of railgun rounds hurtling towards it. As the light from the attack reaches the bridge the PDCs (Point defense cannons) are brought online and set to intercept the rounds. Unfortunately the ship is so massive and has accelerated so... |
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The story: in a fantasy iron age world, a T-Rex-like animal (actually more like the size of allosaurus) has emerged from the forest and started killing people. The animal always retreats to the forest after making a kill, and it never strikes in the same place twice, which makes hunting it difficult. Bec... |
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Would they be able to even destroy the nanoscopic machines, or would something like an EMP be much more efficient?
The nanites in my setting are programmed to tear apart the human genome of enemy troops. This effectively would mean instant death to anyone they managed to infest.
They have mannerisms sim... |
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I have a human character who had his mind transferred to a computer via a method where his brain was gradually replaced with digital parts to preserve his consciousness. (Depending on your view of the Ship of Theseus thought experiment, he is still his original self.) This happened in the 22nd century.
I... |
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Let me preface this by saying I've already finished the piece this question is about *but* I'm wondering if I missed something in my logic so I want to see if there's something you see that I didn't. The basic question is for what tangible, material reason or reasons (so not matters of philosophy or just... |
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This is an Ancient Chinese repeating crossbow [](https://i.stack.imgur.com/wo3gl.jpg)
It is fast, light and easy to use, but really weak.
One bolt alone could hurt someone but not kill, 3-4 bolts could actually be deadly but it's a wast... |
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With terraforming, how to do it and how long it takes depends largely on the planet in question. Worlds such as Venus may be nigh-impossible to terraform, whereas worlds more similar to prebiotic Earth might be very easy to do so. Ideally a human race that is new to terraforming would start with a planet... |
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My early 20th Century (ww1/interwar/early ww2) alternate world has armoured airships (I haven't fully worked out the physics but I assume some sort of handwavium to allow armoured ships not just zeppelins).
**Would 'wet navy' i.e. traditional ships, still be needed?**
*edited to update to reflect comment... |
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# My pirate safe haven runs gambling rings, [horse races](https://worldbuilding.stackexchange.com/questions/224514/illegal-steampunk-horse-racing-after-the-apocalypse-what-format-is-most-profita), and trades contraband but no one can find it or penetrate it. Why?
I've got a story revolving around [pirate... |
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In the new *Thrawn* books by Timothy Zhan, he describes a weapon called a 'breacher missile'. In simple terms it is a missile that sprays a corrosive chemical onto an enemy ship or structure, damaging external equipment like sensors and weapons and creating weak areas for laser weapons to target. The adv... |
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**Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers.
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You are asking questions about a story set in a world instead of about building a world. For more information, see [Why is my question "Too Story Based" and how do I get it opened?](https://w... |
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This question is akin to [Benefits of Boomerang Enchantment on Items](https://worldbuilding.stackexchange.com/questions/196505/benefits-of-boomerang-enchantment-on-items) and covers the Rubberizing Enchantment.
When an item kills a Plop, a slime-type monster that looks like a glob of sludge with a big, t... |
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DISCLAIMER: No, this is not a duplicate of [this question](https://worldbuilding.stackexchange.com/questions/34036/surviving-re-entry-in-only-a-space-suit). We are talking about reentering Venus' atmosphere as opposed to Earth, and the suit parameters are rather different to a current suit.
Background:
A... |
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I had this idea for my sci-fi book, there's not going to be a **central** galactic government, very contested little time, but I do wanna pursue this.
The more shadowy inhabitants of the center of our galaxy are not from here. They have traveled through dimensional doorways opened by the extreme forces ... |
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Someone in the comment section of [my previous question](https://worldbuilding.stackexchange.com/q/162881/32097) pointed out the energetic problem of [ectotherms](https://en.wikipedia.org/wiki/Ectotherm) with human intelligence (the brain needs a lot of energy). I still want to keep my lizardfolk restric... |
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before I get into my question I wanted to thank everyone for their input in my first thread about the general principles of river drawing. I have taken your comments under consideration and began redrawing my waterways accordingly. In the meantime, I'd like to ask a question about rivers and their relati... |
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**Closed**. This question is [opinion-based](/help/closed-questions). It is not currently accepting answers.
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Some background information on the setting:
Religion: God is thought of to have dual sides that symbolize male and female virtues. The female portion represents logic, stability, intelligence and control. The ability to access magic was given to her as a symbol of her divine authority. She is called to l... |
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I swear I saw this question elsewhere. Let me know if this is a dupe.
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**Photons** are great. They're little bundles of energy that
* **Reflect off of nearly everything**, allowing us to see faraway objects that don't necessarily produce their own light
* Are **practically everywhere**, allowing us t... |
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I'd like to include a locale in my world that would be a massive glass crater in the middle of the desert. Originally, I imagined an orbital laser cannon or solar "Icarus"-style weapon from the mediocre James Bond movie, "Die Another Day", firing a concentrated blast of energy that would both melt the sa... |
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Linear Acceleration: A form of transit in space flight where a spacecraft points toward a destination and accelerates for half of the distance it needs to travel, then decelerates for the other half, currently not viable due to the high amounts of DeltaV and fuel required.
I'm working on a Sci-fi univers... |
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So I was thinking about the possibility of a Pangaea like landmass in a secondary world setting. Assuming more or less historical technology and humans, how would the concept of a navy and maritime trade evolve in a world in which nearly all major nations are attached to the same landmass?
While the sea ... |
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In a pre-electrical age, anyone who needs a mobile source of illumination must rely on a lantern, lamp, candle or torch. Torches seem to be the cheapest, most primitive option, yet surely they have some variation in design just as the other light sources vary across eras and cultures.
What are the most a... |
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So I understand a lot of world builders and aspiring fiction writers have often tried to be creative with weapons and get shutdown for various reasons of impracticality or inferiority to steel. I'm thinking why not play into that? Why not have all those weaknesses be part of a closely guarded secret know... |
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I am shooting for a futuristic image of fighter warfare (similar to the depiction in Star Wars). As jets and long-ranged targeting have developed, aerial “turn-fighting” and short-range dogfights between fighter planes have been obsolete for a while. These scenarios seem even less probable between spacec... |
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**Closed**. This question needs [details or clarity](/help/closed-questions). It is not currently accepting answers.
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... |
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Bones can be not quite enough sometimes, and for my secret military organization, every possible advantage is given to the soldiers. Including reinforcing bones. But...where do I put the metal?
Material specifics:
* Handwavium Material X
* Will not cause blood poisoning/other effects once in place
* No i... |
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I'm creating a humanoid bird character. In essence, they are still human with the usual four limb package and upright walking. However, they have two wings on the back for flying, and the feathers, beak, etc. I have no problem with naming the anatomy things such as legs, arms, wings, face, and whatnot. B... |
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## Disclaimer
I am not sure whether this question belongs here or in the Physics SE but I'm posting here due to the fictionnal aspect of the celestial body.
## Context
I'm writing a story where humans discover a small planet-sized celestial body they name **Eurarch**. After investigation, they discover E... |
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I've been brainstorming this idea of America conquering the world right after [World War II](https://en.wikipedia.org/wiki/World_War_II), during the period when USA was the only nation with the atomic bomb.
I'm looking for something either scientific or political that could have accelerated the bombs dev... |
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Witches exist at all levels of society, including the top echelons. These individuals summon the orgone within themselves to perform various feats of magic through invocations. This form of magic is slow, requiring ingredients, circles, and rituals that can take minutes to hours to perform. There is, how... |
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This pure-blood vampiric race is not immortal, but their lifespans *are* about five times that of mortals. This race has lived in a vast city beneath a small mountain range for thousands of years (the world outside is populated by humans) Living with them, though apart in a specific section of the city, ... |
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I'm designing the type of ships an amphibious race could use for long distance travel, like a floating house, following oceanic currents. I imagine it shaped like an iceberg, with more structure below the water than above.
Essentially a big ship made of sculpted pumice. But I saw in various places that i... |
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Related to [On a Speedster's perception of time and ability to function in civilian life](https://worldbuilding.stackexchange.com/questions/112390/on-a-speedsters-perception-of-time-and-ability-to-function-in-civilian-life][1])
So I have a character that is always fast, a Speedster really, 1 second is 24... |
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Imagine there is a community of highly intelligent, well-educated and mentally healthy people. One of its core, undisputed values is that some people are truly human and some others - just two-legged animals, who don't have any real human rights.
How can that belief form and sustain itself among sane peo... |
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I want a weapon that can:
* Chew through reinforced concrete like it were popcorn,
* Blast through 4-inch frontal armor plating of tanks like it were papier-mâché in the wind
* Has a high (or continuous) rate of fire, or makes a high rate of fire unnecessary through sheer murderous awesomeness.
* Be man-... |
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Trying to figure out a method for a teleportation machine that definitely does NOT "kill" the user in any way. The big thing is preventing a loss of consciousness during the process. Even if it gets a little weird in there, there should never be a point at which your brain's molecules have been individua... |
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Basically I'm trying to create a combat situation and training where recruits and people on the front line are expected to burn 6,000 to 7,000 calories a day. Now despite how messed up the war is against these foes, which are aliens, they seem to operate themselves on very good conduct given this is a ge... |
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Imagine a certain nation tested a hypersonic nuclear-capable missile and it was designed to make a few trips around the Earth at low altitude before striking the surface. Don't they need to worry about the prolonged period of time the missile needs to survive the temperature of aerodynamic friction from ... |
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I am currently writing the world, setting and characters for a project of mine called the ORION Project - a story set in a dystopian America in the near future of 2050, where the government has taken complete control over its people, and doing anything to keep it that way. After a nuclear and energy warf... |
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I’m a wealthy billionaire dying of terminal illness. The world I’m currently living in is clearly on the brink of a world ending nuclear war. I predict that the world ends next month. I am putting together a large “time capsule” of sorts, for future people in the post-apocalyptic world to use to rebuild.... |
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In my world, there is no access to modern or traditional gunpowder. I was wondering if a dedicated technician with a modern shop (cnc machines, and a surplus of parts and raw material, etc) would be able to develop a bullet the fires from compressed air that is in the same cartridge as the projectile. Is... |
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In this story I am creating, there is an airborne infantry that specializes in disabling small ships, rapid reaponse deployment, and supporting ground forces with a large number of them. For reference they are called the Hawks.
I am a little at a loss to how a concept I came up with would work. With thei... |
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**Warning**
This question is the first of a series about specific use of teleportation. It will concern only about momemtum and speed: other subjects will be exposed later.
## Context
The story happens in our world and current era. The protagonist possesses the power of teleportation with the following c... |
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In a fantastic world known as inner space, created by Deviant artist Wingsofwrath, technology is similar to our world during the 1920s with a few twists here and there. One of these twists Is the lack of rubber for use in industry and machinery. One of the main impacts of this is that military artillery ... |
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So not trying to wander into flat earth theory here, But a hidden fantasy world (of elves) in the present day. How would we explain it. There is no contact whatsoever between the two world. Could there be some explanation having a tiny grain of reality / science/ logic in it without driving the whole thi... |
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The Royal Library of Alexandria was one of the greatest library of the ancient world. However it was destroyed during the 3rd century after years of decline.
Was such a library doomed to destruction sooner or later or could it have survived, with a bit of luck, until today ?
To be clear, I am more inter... |
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This story set in a medieval world, where necromancy is forbidden by law, but **openly** deployed by the church to simulate hell.
There is a dedicated pool of fire just below the church of this kingdom, where criminals who are judged guilty (by the law) **are executed and animated** again and again to be... |
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It is possible for a society to live without any form of currency within our current capitalistic system?
I imagined a large city situated on the ocean that is independent from all existing nations. One could think of it as some kind of social experiment or forerunner. Its inhabitants have everything the... |
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The [Schwerer Gustav](https://en.wikipedia.org/wiki/Schwerer_Gustav) is one of the largest guns ever used - by many measurements, it is the largest. But it lacks range. It was, however, designed to be an extreme bunker buster, a job which it could do very well.
On the other end of the spectrum, the [Pari... |
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I thought of a species that acts on a hive mind. They are about the size of a 5 year old. Whenever they see a threat to their brethren (or king and queen) they explode (not like a fiery explosion). When they explode, they release a gas that can either be toxic or flammable. Are any of these things possib... |
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How would you form an extended stretch of coastline that is effectively useless for overwater trade -- i.e. there are no sheltered areas to serve as ports, or trade routes that can reach all the way to the shore to allow ships to trade? It seems that a coast with cliffs would be an important element of t... |
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Once again, I am asking questions based on my as of yet defined highly-evolved, human-derived "merfolk". But this time, I'm going towards deeper waters-- let's say about 5000 meters below sea level for now. My "merfolk"'s rough average technological level is roughly analogous to a 1950s-60s Eastern-Europ... |
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[](https://i.stack.imgur.com/IFDCM.jpg)
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> So the human body temperature is much lower than that of the cave environment. That means that the air you're breathing is hotter than the inside of your lungs. In these conditions, **the humi... |
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How realistic would it be for the son of an emperor to go to some college town (think something like Oxenfurth from *The Witcher*) with a false identity? He pretends that he is some kind of lower-rank aristocrat in order to not get special treatment, and also for safety reasons.
I think it would be more ... |
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I'm writing a cyberpunk book where people can regain their vision by connecting an artifical eye and the optic nerve would be replaced by a electrode, is it possible? Ignoring the rejection and possible infections, could an electrode transmit information as good and as fast as an optic nerve?
[Answer]... |
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Of the general options that exist in terms of hypothetical space launch systems, what is the most plausible option for a relatively near future SF setting? The focus here is on Earth to LEO, as the level of space development this cheaper access would imply also lowers costs by giving refueling infrastruc... |
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