Posts tagged physics
I'm writing my first sci-fi novella and I'm looking for a bit of guidance from some scientifically literate people. My main premise is that an alien space ship similar to the death star enters Eart...
For my science fiction universe, I need to mine a lot of deuterium and helium-3. I have 10,000 intake fans each capable of 3,000 gigaliters an hour pushing atmosphere through 5 billion diffusers. ...
Assuming humans live in dimension 3+1; 3 spatial dimensions, length width and height, and one dimension of time, Is it possible to move matter from our dimension 3+1 to another, such as 4+1 (addin...
I'm looking for biological explanations for some traits I want to give to an alien creature. Description of the Creature It looks like a five foot tall praying mantis, or perhaps a centaur. It ha...
Imagine a space battle between two warships without inertial dampeners. Obviously the ships would be limited to perhaps 4 gravities of prolonged acceleration, and could only perform short bursts o...
In the world I'm making I want to have very large creatures that will later be used in organic architecture as housing for the human equivalent in this world. In order to make this world realistic ...
You are probably aware of that certain radioactive things glow, usually a soft green. But is there any way to add compounds or what have you to achieve a different color, say, orange? I know Chere...
So, I'm writing a set of short stories (i.e. in the "Martian Chronicles" format). It was going to be centered around life on Earth through the sudden dissapearance of the Sun, but after surprinsing...
How fast does the Earth's core rotate currently, and what would happen if its speed of rotation were to increase dramatically?
Based on the situation described by this earlier question: recap If due to some strange phenomena that changed our universe laws, time stopped and can only move if a creature capable of observing...
Newton's first law of motion states An object remains with the same velocity, or position of rest unless an external force is exerted. What if we created a hypothetical universe where A...
The lunar phases describe the form we perceive the moon having based on the light it reflects from the sun while being partially turned away from us. Q: Can we abuse science to make the moon have ...
Yesterday I was reading through this question and it got me thinking: would it be possible on a ship or building mounted railgun to convert the energy from the recoil of the shot in order to partia...
I'm writing a science fiction, although I'm not from a physics background. A part of my plot is: In a futuristic Earth threatened by huge power demand and climate change, a scientist creates a qua...
I'm not talking about stuff like radiation and mutations. I'm talking about mechanics (for now). Necessary effects: With superstrength, you can... lift objects weighing many tons without your f...
Imagine that, suddenly, a rather large cone shaped hole from the core to the crust appeared. All the land mass of the cone just vanished. Which could be the changes that this event would produce i...
I'm beginning to build a world for a story I want to write. The world consists of a planet, roughly earthsized, with a couple of natural satellites (moons), and roughly same orbit and a similar sta...
Does the explanation of this matter sound plausible? A type of exotic matter that allows for generating virtual particles with an energy of 432,541 Mj = 1 uL. The matter is not being converted to ...
In the universe that I am developing the following has occurred... A new type of "liquid energy" has been found/created: 432,540,909,020.0724 Mj in 1 Liter Edit: Description of what the fuel is in...
In our universe infinite energy is not possible, at least given the known laws of physics. But in another universe what would allow for energy to be in the same amount as space? But how large i...
If your blood pressure ever falls below the ambient atmospheric pressure would it be possible for you to bleed. Because if blood pressure was less than that of atmosphere air would move in if you g...
Lets suppose we have a material that is not equal affected by gravity as everything else,I don't care how, anything from dark matter to fairy dust works, but the point is that the weight formula fo...
I was reading about the Riemannian Universe http://gregegan.customer.netspace.net.au/ORTHOGONAL/00/PM.html I noticed that Greg Egan doesn't seem to talk about how Gravity would work in the Riemann...
I was thinking of a set of life forms that originates from neutron superfluid inside a neutron star. So these life forms are not made of atoms but are made entirely of neutrons. How might this li...
What type of extraterrestrial body could successfully pierce through one side of an Earth-like planet, go through all strata, through the core, and then continuing through the strata and through th...
I was thinking of a universe in which there is a relativity that is between Galilean and Lorentzian Relativity. In this universe there would be effects of length contraction and time dilation but ...
I always feel like "hypothetical history of science" questions are kind of impossible, but here's a go anyway: Imagine that, for the entirety of human history, EM radiation from anything beyond th...
Suppose an intelligent species evolved on a large rocky planet, one with sufficient mass that the species had little hope of developing anything anytime soon that could achieve escape velocity. The...
I'm trying to plan a rotating wheel space station for a project. It should be noted that I have to stay as close to real physics as possible, although it takes place in far future. The space statio...
Let's assume this planet has had a normal lifecycle up to this point, becoming an Earth-like world with around the same climates, size, landmass, day/night cycle, and has a single moon of similar s...
The Hollow Earth theory is/was a pseudoscientific idea that our world is actually on the inside of a large sphere. The "sky" points inward towards the center, where the "Sun" (a light source) is, w...
I wrote a novel based on a human civilization that lives floating cities and dirigibles on a small, atmosphere-abundant super-Earth with a liquid water core (there's a smaller solid core under that...
Thinking of terraforming a localized region, how (if possible) can we create an artificial high pressure zone, whether practical or not, Initially I thought, perhaps we can arrange heatsinks to i...
As a follow-up to this question: Could an asteroid aerocapture around Earth? The answers seem to indicate that it would be possible for such a thing to happen (an asteroid aerocapturing using the ...
I read What would make scientists realize they were on a flat world?, and I decided to make a similar one. Scenario: While poking around in an alien ruin, scientists discover a gateway which of...
Asking for what pseudoscience might explain a storytelling need: Given parallel dimensions (worlds), we discover that through a portal device, a person equipped with a special spacesuit-like outfi...
Would it be possible for an asteroid in solar orbit to go near enough to the Earth that the Earth's atmosphere slows it down into an orbit that is, aside from its low perigee, stable without using ...
I'd like to justify a lightning man in my world, and I have a theory that by some sort of magic, his cells in the dermis (middle layer of the skin - okay, for simplicity, don't count hair) are able...
We all know that electrons behave like flowing water, e.g. that electric currents behave like water currents. We also know that modern computers use electric currents to carry out mathematical and ...
Forgive me if a similar question has been asked, I can't find it. How would tiny creatures, ants, plankton, bacteria, for example, be affected if the Earth had twice as much mass. What are the gra...
So I had an idea earlier today and was wondering. Most sources you consult about the supposed "vacuum metastability event" say that the bubble would begin expanding at NEARLY the speed of light, no...
Non-Newtonian fluids are fluids that exhibit the qualities of a solid under rapid pressure but function as a liquid under long duration pressures. Is it possible, that an animal skin or some sor...
So I've been thinking about colonists on a huge planet. If a jupiter-sized planet had a breathable atmosphere, we would still be unable to live on it due to excessive gravity, which would crush us...
Another question about my exotic matter planet. I mentioned floating landmasses via anti-gravity and exotic matter mining, but I recently read this: https://www.sciencenews.org/blog/context/fact-a...
Positive mass moves in the same direction as its momentum and if negative energy exists then it would move in the opposite direction from its momentum. I was thinking of a type of mass, known as "...
If a spy is getting a fix on a satellite and transmitting a tightbeam transmission to it (encrypted of course), there will be signal leakage. Can the spy be detected by the good guys, by them notic...
Basically I want to know what would happen to a planet if half of it was destroyed using explosives, does the answer depend on the size/gravity of the planet and what would be the result on the env...
Htrae is a planet with an abnormally strong gravity. In Htrae, the escape velocity is greater than the speed of light. Suppose a civilization like humans (call them snamuhs) evolves, with the uniqu...
This is for a storyline that I have been building. Currently, scientists are able to teleport spin cubits in laboratory conditions. This is often mentioned in connection with information transfer....
Okay. I have been piecing together the elements of another story for my school PDF newspaper (we publish one to a wiki page every two days). Yesterday I asked this question on whether a second habi...
