The physics of time: The 4th dimension of reality | Sean Carroll and Lex Fridman
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- Опубліковано 30 кві 2024
- Lex Fridman Podcast full episode: • Sean Carroll: General ...
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GUEST BIO:
Sean Carroll is a theoretical physicist, author, and host of Mindscape podcast.
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Full podcast episode: ua-cam.com/video/tdv7r2JSokI/v-deo.html
Lex Fridman podcast channel: ua-cam.com/users/lexfridman
Guest bio: Sean Carroll is a theoretical physicist, author, and host of Mindscape podcast.
Lex, I love you bro. You ask the questions I'm not smart enough to know that I want the answers to lol.
spec ops in the original mw2 is goated.
Yo am the first viewer of this productive episode. Thanks lex for the priceless enlightenment
Capppppppp
Time is a flat circle -Rust Cohle
Love his view that's how I thought of it. I mean space and time being the same thing
This material is of course not easy to digest . Its also not topic matter that gets a push in our mainstream culture , I think particle and theoretical physics is without a doubt the ultimate doorway to technology that right now is unforseen.
For example, if we are to truly become explores of the universe beyond our solar system . Chemical rockets and the concept of simply going faster is not going to get you there . We are going to have to find a shortcut , if plausible
@3:45 what does he mean "if you zig back and forth in spacetime, you take LESS take to go from a and b" [than a straight line from a to b] ?
Because A and B do not exist any longer in a way we imagine it. It's basically the same spot.
The greater the distance you travel in space then you must be traveling less distance in time because there is a fixed quantity of spacetime combined. So the more you move in space, there's less time available left over. (This is an analogy). So, using numbers, if you start out with 299,792,458 meters of spacetime, and travel 100,00,000 in distance, then you only have 199,792,458 meters of time remaining so your time is reduced by a third. (These are bullshit numbers but I'm trying to make the point - in reality it's calculated using a 4D version of Pythagoras's theorem) - Alex
Same concept as real time travel.
If you are born, set an ideal wristwatch timer for 5 years, and NEVER move, you will experience ALL the time in your current place within space-time, since your relative space didn’t change
Versus… if you are born, set an ideal wristwatch timer for 5 years, walk a lot during this time, then return to your place of birth according to your timer, you should arrive a TINY bit LATER b/c you experienced LESS time from birth to now, compared to if you never moved, because you experienced MORE space. Your wristwatch timer will be a TINY bit SLOWER, meaning - You zig zagged more, so you experienced / took less time from A to B. It is just a TINY BIT though, so in reality you arrive at the same “time.”
To time travel, you must leave earth QUICKLY, travel far away (more zig zag), and then wait many years. Then you return quickly. In this way, you zig zagged so much, came back, and experienced less time, so now you aged biologically 60 years, and your twin brother aged 90 years. You travelled in the future! Because zig zagging more reduces your relative time, compared to staying still or going directly A to B.
Time is a crooked bow.
Going to the edges of the universe to explain time as a 4th dimension? It's a lot easier than that. Try meeting a friend at a particular 3rd dimensional location without setting a date. I hope you have patience!
Should be like a drinking game but for every time he says theory lol
Addendum: I mean this in the most quantum sense of particle interaction.
The structure is the flower of life in four dimensions
Infinite time/space curvature is a spiral. Orbits. Spheres. Circles. Time as we know it is not linear, or a one way road-it is a treadmill and the runner is low on caloric intake. If the universe is a closed system, and quantum tunneling is really a result of the particle reversing time to when the barrier doesn’t exist to traverse the “wall”, then we are more than likely living in a closed time-like loop. Which means every day is exactly the same except in a closed system the entropy will always increase.
Anne had four apples and subtracted six, then she had two negative apples. Math proves that there is a negative apple tree.
Also math - infinite numbers between 0 and 1 due to always being able to add another decimal…….math be weird
Which is only a objective reality instead of being observed reality!
that is called debt. You owe 2 apples.
@@procerator yes...but if I pay you back two apples from the negative apple tree, would that proof that dark matter exists?
@@paulneelon8343 if you pay 2 apples from a negative apple tree - I will have -4 apples :D
You need to pay 2 regular apples so that the total is 0.
This is just putting a perspective on negative numbers. It has nothing to do with dark matter.
Time is merely the expression of energy.
The Three Dimensions is,
Micro- Medio- and Macro-Cosmos.
Time is the 'shadow' of Motion
Once you realize this guy looks (and sounds) like a Simpsons character… you can’t unsee it
Why do we accept complex and illogical explanations that we do not understand as truth? Einstein said that if your explanation needs an explanation then you probably do not understand the question.
Spacetime is real. Spacetime = length * width * height * time. Simple
Time is a constant. Simple
Time is relative between the dimension the observer is in and the dimension of the event being observed. Simple
Any questions?
First 4D here
Who is posting these clips since Lex has buggered off to the Amazon?
Expect he has a team working with him.
You can schedule releases in advance.
Forgot about that. Super jealous and can’t wait to hear about it
It’s certainly not simple … actualleeeeeeeeeeeeey
If ypu close yours eyes and just listen, Mark Normand is a pretty smart dude
Spacetime is not a Euclidean space. Time is not the same as the three dimensions of space but may be thought of as having the square root of -1 implicit in its measure, thus the distance from one point to another is the square root of (ct)2-x2-y2-z2, points that are the same distance from an object do not form spheres, and so forth.
Time isn’t a dimension. There is no time. Time doesn’t exist.
I agree. Time is just an illusion
If time isn’t real how would you be able to explain time dilation?
Bro there is nothing as time exist . Its just your brain that is giving you sense of something like time which actually doesn't exist. I can ellaborate it in detail if you are interested
I can give a analogy to your question about time dilation, how ever it doesn't completely fit the ans.
What color is it of completely empty space? You will answer black . But there is nothing such as black color exist. Similarly when you close your eye , you will see blackness, but how can you see blackness i.e black color while there is nothing such as black color exist. Did you get it . Brain is filling the absence of color as color black. But the color black doesn't exist.
Here is the fun fact. There is no guarantee that black color you see and i see are the same. In fact it is possible to say different people see different color black since it has no measurable wavelength and frequency. It is completely brain constructed.
@@ponder7507black is the absence of color. So that makes your analogy fundamentally wrong……..
Space and time are not straight lines but circles of time.
Closed time-like loops with a dash of entropy.
Explain
Lol time is a circle of time
@@senju2599 Many say there is no such force as gravity .Take a powerful flashlight . Over a distance the light breaks up and in a circle pattern creating its own energy . Dark matter is a factor in the circle breaking up and at some distance joins other light energy allowing expansion of the universe. This is my opinion and what do I know energy and darkness combined the circular movement resulting heat known as the Big Bang but was softer than one big explosion. Take care. .P.S. The high school staff had a party upon my graduation.
Cite your sources.
Rex never have this guy on ever again. He’s freaking me out man.
:D
Guys a REAL Dork, but I like him too…I’m perplexed.
Don’t watch this stoned….
Please…
😂
Now I’m curious..
Time doesn't exist
Yea tell that to all the clocks
10 days have passed since you posted this comment
OK.......
Tinfoil hat much?
@@SpaceHCowboy you really don’t understand that term
@@tvviewer4500Good job helmet breath.
But I wasn't talking to you or even about you.
Bawbag 😂
This guy has no idea what to ask he’s totally confued lol
Penrose diagrams are pretty cool, would be cool if someone knew how to properly explain them so y’all would shut up.
Im gonna tell my boss that time doesn't exist