Posts tagged physics
In our universe, the energy of the sun generates heat and light. This helps keep the earth warm enough for life and drives much of the earth's climate. Warmth slowly bleeds off into the coldness of...
In a parallel universe the uncertainty in position and the uncertainty in momentum are directly related to each other. What kinds of effects would this have on the quantum mechanics of this univer...
In a parallel universe if two objects occupy different positions in space then in the reference frame of each object the other has length contraction and time dilation. If the two objects are very...
This is going to take some imagination and assumptions (and knowledge about physics). Imagine gravitational mass and inertial mass would be different. In classical mechanics it seems a coincidence...
In our universe if there are two objects that are moving relative to each other then each will see the other's length contracted in the direction of motion and it will see the others clocks running...
Suppose, through some fantastical mechanism, all macroscopic (i.e. reasonably massive) objects in the universe were instantly made at rest. In other words, the relative velocity between every two ...
So the premise goes: A previously-traversable wormhole evolves into a black hole because (x) happens. What's (x)? What would it take for this to occur? Either naturally (a cosmic occurrence), by ...
I know that in our universe, electromagnetism and gravity decrease with the inverse of the distance squared. Would it be possible though for there to be a force in another universe with three spati...
Researchers create a sonic tractor beam By Hanae Armitage 27 October 2015 1:00 pm Using a simple set of loudspeakers, scientists have figured out a way to levitate and rotate object...
I first was thinking centripetal force on a circular ship, but performing external maintenance would be extremely difficult due to the force pushing the person or robot off. Would a spherical ves...
Suppose in one part of the universe unexplored by science, I imagine there exist a species that rely on quantum teleportation to transmit information about their genetic codes across to the other s...
Question 2 of Semiliquid atmosphere - Is my premise/conclusions correct; and will it get the result I want? Atmospheric effects - As mentioned before, I prefer it to be visually very similar to o...
I'm trying to picture life on a planet sized moon of a huge planet in a one-star stellar system. It would be tidally locked, which could do some interesting things. It has an iron/nickel core for t...
In an alternate universe there is a force known as the emotion force although the force has nothing to do with emotions. Anything that interacts through the emotion force has an emotion charge tha...
For my Science-Fantasy WIP I am considering using a single artificial planet (roughly the size of a Dyson Sphere) and its moons (of which only three are large enough to exert any real influence) as...
Think about a big space station or whatever giant space building. What will be its mass to attract (with gravity): Small asteroids (1-10 kg / 2-20 lbs) Spaceman (100 kg / 220 lbs) Satellites (...
For my story to work, my characters have to stumble across a small wormhole that actually exists on Earth and is responsible for multiple disappearances throughout history. It connects a point on E...
I am an immortal, megalomaniacal supervillain with unlimited resources and patience. I want to slowly eliminate the Earth's axial tilt so that its equatorial plane is coplanar with its orbital pla...
While smashing heavier and heavier particles together to create super heavy elements 122, 123, and 124, scientists noticed that these collisions created strange, random-looking electromagnetic wave...
Every child is afraid of the darkness. For them its not simply the absence of light, its the absence of information. Even if you know that there should be a wall or a doorway right in front of y...
Let's assume I have a planet and the planet itself is made out of something solid. Around the floating rock is a layer of gas, then a layer of liquid and then a layer of gas again. Thus the sea fl...
Background I have a character. He is the master of a particularly specific martial art that is pretty much only movement. But it's pretty powerful, in that he can separately: a) move in a manner t...
Many fantasy stories involve large spiders like in Harry Potter. These creatures behave almost exactly like normal spiders despite their size. My question is: can large spiders still walk upside d...
Imagine a world with a dead core, like Mars, but covered in water. This world has managed to hold on to its atmosphere and quite a bit of its water as well. I'm sure the prodigious life there would...
I am sure most of you have seen Star Wars. In Episode IV: The Empire Strikes Back our heroes travel to Bespin, a gas planet with a habitable zone to refuel at the floating cloud city. Well of cou...
I just stumbled across this website the other day, and this is my first time posting, so apologies if the question is too vague or improperly worded. I am trying to build an all ocean world. I'm ...
Imagine the speed of light is 100 times that in our universe. Light from the moon takes about 1/100th of a second, the sunlight reaches our eyes in about 4 seconds, from nearby Alpha Centauri in ab...
Bob escaped from his exploding spaceship in the world's most ghetto escape pod - an airtight metal box, with only some respiratory gear ($\text{O}_2$ tank, $\text{CO}_2$ filter) as company. Now he'...
I am writing a SF story, in this story, a life-form(You can just call them alien) from another universe comes to earth. They used "imaginary velocity" to make their time elapse faster than all bein...
Imagine aliens dropped a small black hole (say, 1% of the moon's mass, so you wouldn't notice the difference in gravitation) into the sun (from the far side of the sun, so nobody on earth can see i...
Looking at all the movies that involve robots made from materials available from planet earth (think Pacific Rim, Iron Man etc. but not Transformers), what is the theoretical limit of the capabilit...
As far as I understand, when you fuse deuterium (H-2) and tritium (h-3), you get a helium atom and a spare neutron. Basically alpha-rays? Now alpha rays are easily blocked by matter. You can block ...
In my near (+200 years) future world teleportation has been invented and is now in common use especially for off-world travelling, but it works by creating a perfect copy of the travelling human ne...
I'm wondering what types of firearms would be impacted if explosives and combustion in general were to have a random chance of being more potent or less potent. Could new firearms and/or ammunition...
Al is a rat. He is also an engineer of quite a high caliber. He has developed a suit of power armor, with a movement-assisting exoskeleton that greatly increases his strength, speed, and endurance....
I ask this as a basis for a World (in this case Moons) Building I'm doing. I came up with a couple of different problems and some possible solutions to those problems: All of these questions pre...
This is steampunk, so assume a non-relativistic, non-quantum world (but more on that shortly). I want a material that insulates against acceleration but not gravity. Full explanation: This is t...
In my very lengthy story in the near future, there are some great 'Modern Marvels'. The next one I'm going to introduce might not be feasible, but if it is, I'd like to attach some numbers to it. ...
As I understand it, the principle of relativity was accepted from Galileo until Maxwell, whereupon the equations which predict constant speed of light imply a preferred reference frame in a Euclidi...
I'm exploring this idea for a fantasy world, and I was wondering how these planets would affect each other. The system would feature orbits in all three dimensions, not relatively flat like ours is...
After reading hours on here, I stumbled upon alot of answers that rely on some major changes in our understanding of space and time and its tech to allow us control antimatter or some future thrust...
Instead of flying say tons of metal and/or water and other raw materials/molecular matter to the Moon or Mars, could we shoot it there in ionized form by accelerating these sufficiently? Maybe sub...
Let's say we get a cheap technology to collect and then send (hypothetically all) our waste to the Sun by a rocket, and we choose this technology as the main (and only) method to utilize our waste....
You see this in quite a bunch of movies / books (think avatar). What could be a reasoned physical explanation of such phenomenon? Would this explanation impact other things on a planet? Like most...
Definitions: Slip Space - The area of space separating planes of the universe. Think of the universe as a flat piece of paper. Now imagine this flat piece of paper wrapped into a spherical ball. T...
Following this question, I had additional question of habitability. Assuming that life could exist on planet formed roughly twelve billion years ago, allowing complex life to exist as of seven bill...
In this setting, humanity has advanced to the technological capability of extra stellar travel via faster-than-light drives. However, due to distances between inhabited areas being extremely large,...
I was wondering if there is a realistic way that one can "travel" to the future, using today's technology. Two scenarios I have thought of: An individual is put under cryogenic freezing and then ...
A great many questions have been written about a habitable moon around a gas giant. This is my take on it. Somehow (extra points to whoever figures out exactly how it is possible) Jupiter gets kno...
I'm working on a space-fantasy setting and one of the cosmological quirks is that the cosmos, instead of being a vacuum, is actually filled with a gaseous substance. As a result, the entire cosmos ...