Transcript preview
Open
Kind: captions Language: en explain space time and get free lemonade okay so the idea behind space-time is that uh space and time can really be interchanged and sort of treated as the same thing the universe essentially has four humanly observable dimensions i know nothing about space-time i'm a biologist three linear dimensions and one that's in time normally you think about these things as very different sort of entities but space-time is this wibbly wobbly sort of stuff that combines properties of both spatial dimensions and time if you travel fast through space you get what's called time dilation and so like you travel through time slower the only thing that i think about when that i hear that word is uh space time continue well time is the stuff that keeps everything from happening all at once time and space is the is the thing that keeps from keeps everything from getting in everything else's way how's that space time is kind of a fabric in which everything else exists so that when you're changing one part of it it uh bends to accommodate i guess that's the best way to describe it space is three dimensions and time is supposed to be the fourth dimension but you can't travel through it like you can through space so they say but i think that's just lack of imagination we're used to thinking about time and space as being two very different um things geez now i can't do it you only actually see space-timey things if you're traveling very fast or if you're in a very strong gravitational field that's totally outside our everyday experience there's no reason in the world we should be able to understand it and one free lemonade present hot diggity dog i get lemonade
Resume
Categories