What Would Travelling Through A Wormhole Look Like? (VR/360)Jun 11, 2021
Oh Oh, we hear a lot today. I want to bring you a 360 degree video about
wormholes because we have seen
wormholes in science fiction movies and TV shows, but we can never really
lookaround us, so I decided to delve into the mathematics and write. a ray tracer that
wouldactually model the paths of light rays around a wormhole, so this is an example of a wormhole near the planet Saturn. Obviously, this is a nod to interstellar. In fact, I used the same mathematical formulation that Kip Thorne and Double used for that film to give it the
lookthey wanted for the film, I could adjust the diameter of the wormhole, the length of the constant diameter throat and the amount of curvature around the mouth, which is defined by a mass parameter, so when you enter there is a mouth that is a kind of circular area that we see and then when we are inside it, there is a section called the throat that has a constant diameter and we see rings of light that have spiraled around the hole, so like I said, this is designed with visual. effects in mind with many things you can play with the first wormhole that was documented in the literature that was traversable is the LS wormhole which is also known as the Morris Thorne wormhole in which you can adjust the diameter and I guess you can also add a constant width throat, so yeah, I just created one here and we'll go through it;
This doesn't have the modifiable mass limit, it just has a very wide range. No, Morrison Thorne looked at this and they appeared. with real solutions for how you
woulddistribute mass and material in the universe and of course they discovered that you needed exotic matter, that is, matter that in some reference frames can have negative mass, so I should make it clear that while these are physically correct and traversable wormholes there is no evidence that wormholes actually exist in reality and if they did exist we don't know how to create them because they require exotic matter that we don't know exists so anyway I want to know how to play with some of those sliders here they are It's a new wormhole.
You can see it's distorting gravity. It has a mass of 0.1, a radius of 1 in a length. You'll also notice that it is spherical, so wormholes are spherically symmetrical, meaning that whichever direction you look at them, they are a sphere. So now
whatwe're doing is increasing the length of the throat and as you see as we increase that length we start to see more and more rings as the light echoes around the vision, now it's going to dip into the middle of the hole and yes. You can see these rings of light, but you know instead of going all the way,
whatI'm going to do now is collapse the wormhole to zero length so you can see the difference as we shrink it from a length of 10 to a length of zero, all that ringing goes away and no, we're sitting on the threshold between two different universes, so now let's go back and adjust the mass parameter, mass is point one, we can increase it quite a bit.
In fact, we can increase it by a factor of 20 and as we raise it, it will adjust the number of lenses here. Now a lot of people call this gravitational lensing, but that's not strictly true. These are space lenses. There is no gravitational component here because. The way the metric was described, there is actually no gravitational acceleration in this object, but because space is so warped around it, the light is warped and of course the objects will warp exactly the same. way if there were a gravitational component than a physical one. The objects and light would follow different paths and we would also have enough tidal forces that we would probably tear anything apart, so typically traversable wormholes don't have gravitational effects, so now let's roll into the wormhole again so you can see how it looks. like we just move to the other side and then once we're on the other side, by the way, you can look back because this is a 360 video.
I'm going to adjust the mass of the wormhole to essentially zero. and this eliminates all lenses, interestingly by reducing mass it actually increases the curvature of space because high mass causes the curvature to spread over a wider area, low mass causes it to be almost exactly attached to the surface of this sphere, this is what it looks like. It's a sphere II and as we move forward there's no transition or anything here, it just looks like a planet right now, but as soon as we start orbiting it you'll notice that the textures are basically moving in the opposite direction.
What we are seeing is not an object with a surface, we are seeing a portal to another universe through that sphere. This is something a lot of science fiction with wormholes will ignore things like deep space 9, they don't actually show you the back of the wormhole, well yeah. the back is exactly the same as the front because it's a sphere, so to give you a better idea of where the surface is, I'm going to modify my graphics and add a grid over the surface of the wormhole that is in the mouth. There is also the inner throat, so we have a yellow sphere on the outside and there is actually an interior here in the throat and now we go to the other side, so you see, I have four different colors of grids for the spheres around the interior.
We're on the near side and we're on the far side and you get inside versus outside shading, so I'm going to go back and you, this is 360, so you can move the camera. I'm going to pause it in the middle. Take a look at A left and right it doesn't look like we are inside a sphere, it actually looks like we are between two planes because the light rays just go in any circle and keep going around the wormhole it has a finite width but no There is no wall or anything that you will run into if you go in with a spaceship that is too big then one side of your spaceship spins around the wormhole and crashes into yourself so I am changing viewpoints here to show you what happens if you try to go. sideways, so this is right outside the wormhole and we go to the site.
You can go in any direction and you will essentially orbit the surface. Now it looks flat because when you are close to a sphere, it looks like a flat object. but the good thing is that now we can go right inside the wormhole and sure enough, now we can see the surface above us, but we can also see the surface below us and at this point we are exactly in the middle of the gorge and you. We'll notice that the ship, these things are going to look like they're going in the same direction, it looks like we're trapped between two parallel planes, but we know from the outside that that plane is actually a sphere and the Bluest plane is actually a sphere, so which is just because space is warped in the way that they both appear flat to us and of course now if we continue moving through the wormhole that is down and we move down through this sphere and we have both above us and of course, This sphere is now curved in the opposite direction to the one above us, but it doesn't matter, we can't see it because we are very close to the surface of this wormhole, so yes, the holes of worm are strange, there will be a second part of this that is not a 360 video I will explain how I did it and a little more of what you are seeing here I am Scott Manley fly for sure
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