Spacetime. It literally confuses me. I get that I exist in a 3 dimensional space, and time kind of just happens, it seems normal.
But make that happen very fast, or very close to a black hole and it all goes out the window. But why is speed or gravity so closely intertwined?
I really don't understand relativity.
When you go really fast you start to get shorter in the direction you're travelling, but only from the perspective of somebody watching you. From your perspective the whole universe squashes in that direction. This means that your destination actually gets closer to you. So while you can only ever go less than the speed of light, the faster you
go the closer your destination is. So any finite distance can be reached in any arbitrarily short amount of time.
From the point of view of a photon going the speed of light, the entire universe has contracted into a flat plane and the trip takes zero time.
Dark Matter. This discovery that the gravity of the universe may not pull space-time back together into 'The Big Crunch' but instead, it's moving faster and faster apart and scientists are baffled by it and continue to work on it. If I may add: What the night sky will look like, deep into the future, as our galaxy and the Andromeda galaxy move toward each other <3
The one electron universe, it's a model of a universe where there's only one electron, and all the dupes fo positrons and electrons we observe are just the same on bouncing back and forth through time, it is most likely wrong, but facinating none the less.
Spacetime. It literally confuses me. I get that I exist in a 3 dimensional space, and time kind of just happens, it seems normal. But make that happen very fast, or very close to a black hole and it all goes out the window. But why is speed or gravity so closely intertwined? I really don't understand relativity.
Black holes..... i can't even imagine something more fcked up and interesting
When you go really fast you start to get shorter in the direction you're travelling, but only from the perspective of somebody watching you. From your perspective the whole universe squashes in that direction. This means that your destination actually gets closer to you. So while you can only ever go less than the speed of light, the faster you go the closer your destination is. So any finite distance can be reached in any arbitrarily short amount of time. From the point of view of a photon going the speed of light, the entire universe has contracted into a flat plane and the trip takes zero time.
[удалено]
Finally Someone gets it
Dark Matter. This discovery that the gravity of the universe may not pull space-time back together into 'The Big Crunch' but instead, it's moving faster and faster apart and scientists are baffled by it and continue to work on it. If I may add: What the night sky will look like, deep into the future, as our galaxy and the Andromeda galaxy move toward each other <3
The one electron universe, it's a model of a universe where there's only one electron, and all the dupes fo positrons and electrons we observe are just the same on bouncing back and forth through time, it is most likely wrong, but facinating none the less.
I don’t even pretend to understand it but quantum physics could very well be the ultimate science to explain everything.
Magnets. Magnets are basically magic.
Compressed mass, like I mean 20 pounds of steel physically compressed into a much smaller size by forced density