String theory explains multiple dimensions of time

String theory, one of the most complex theories in the scientific community, may also be the "Theory of Everything" — a framework that explains everything in the universe. While still theoretical and highly debated, the mathematics of string theory suggests that there could be multiple dimensions of time. Columbia University's theoretical physicist Brian Greene shares how that's possible.

Greene is the co-founder of the World Science Festival, which has a new initiative called "City of Science" which is a 5-event series. The third event will be taking place in Queens on September 25, 2016. All events will take place in one of New York City's five boroughs throughout this fall.

"City of Science" is free and open to all New Yorkers of all ages.

[Michael_Michaels]

This is why I, sometimes, get frustrated with mathematics. It provides us the answers but sometimes it reveals theories beyond our comprehension!

[RoadRunner]

I think the first and biggest mistake we can make, is to think that extra temporal dimensions act as we know ours. What I mean is, those extra dimensions will not allow us to travel backwards in time, or travel into a parallel universe, where 1 particle went the wrong way and the universe unfolded vastly different or almost similar and just one thing changed in that universe, as it is depicted in science fiction.
The other temporal dimensions might just act similar to entropy, the actual thing behind time.

In our universe, entropy increases, things traverse from an orderly state into and unorderly state, chaos.

In another universe, things might have started chaotically, remained chaotically and shifted into a state of order.

[BenjaminBjornsen]

I think its just like the story of flatland, they can move forward, backwards and to the sides, they have no concept of up and down, same with us and time, we can conceptualize moving backwards by remembering, forwards, by planing and sideways by fantasizing about what could have been- had you only made different choices.But its freeking hard trying to conceptualize "thinking" up & down in the same manner. Maybe this has spawned the idea of heaven(up) and hell(down) ? [EDIT: I just mindf ***ed myself, what if what I do now affects my past and that again affects my future, and what if the act of planing ahead ripples back in time in a way way that affects what I plan ahead, or what if my current desires gets satisfied in the the future or the past-will my "urge" alter?] Im not gonna get any sleep tonight :/

[_____alyptic]

Reminds me of complex time, which needs to be a video in the manner where you don't just travel forwards (+1) or backwards (-1) but you have other stuff in it too :O Complex directions

[void]

A lot of disputes I have heard of the possibility of extra time dimension involve the possibility of loops. This assumes time is treated as though it is a POSITIONAL vector, that is measuring a 'place' in time on some coordinates. Then, treating it as a position, you proceed to posit making a circle to come back around. This is all logical under this way of thinking about it.

However, what if time is more VELOCITY-Like instead? That is, when you specify a time vector, you specify a direction and rate of change (Of something, I am not positing what). Then changing the vector does not return you to the same place since there is no 'place' to return to. If we are inherently 'following' the vector, then even turning it around can AVERAGE out to zero, but not necessarily imply a return to an already passed point (again, trying not to assume that reversing the rate of change necessarily reverses the actual 'motion' since we don't understand the way the time dimensions might work). This then has the complication of asking what it is a rate of change of or even what rate of change means with time being a result and not a part of it.

Another possibility if time is actually positional is that time rotation is similar to how when you rotate an object through two axes in different orders in 3D or higher space, you don't not reach the same rotated state, a sort of 'order of operation' dependence. What if, in changing the direction of the time vector, you inherently end up in a different 'position' no matter how you rotate (assuming for some reason you are forbidden to simply reverse your 'rotation' exactly). What if, no matter how you move in multi-dimensional time (this would probably need more than 2 dimensions) there simply is no way to form an analogue of a closed path? Then the concerns about returning to a prior point are inherently a non-issue.

[Numbermind]

'Tech Insider' do you edit this videos???? Or someone makes them and u upload them?? Btw i love your channel

[diphenhydramine]

By the way our dimensions work where a square is just a huge series of lines, 2D time must be a huge series of timelines, like a huge series of alternate timelines.

[jeremynewcombe]

I feel like if the first dimension is experience of time, then the second dimension should be called something else, since it probably doesn't act like time as we know it.

[heatherfoster]

Um, who thinks that extra dimensions are just "too small" to see? I think the conclusion is that we cannot perceive them if they exist - like we lack the faculty, not the magnification.

[southwestoklahomaairsoftcl]

Time dimensions are simple to understand. If you can orthogonally intersect lower dimensional spaces to create a higher spatial dimension the same can be done for time dimensions. For instance if you intersect two 2D planes to create a 3D cube and two 3D cubes to make a 4D tesseract. You can also intersect two 4D cubes and both the 1D time dimension from each 4D cube and you create a 5D space where two of the axis of measurement will be time. So 5d2t. At the next level up you will have 6D of space and 3 of those axis will be time. I created a mathematical model of the universe that assumes space and time expand into higher symmetries proportionally. It always seemed odd that spacetime is considered one entity but when expressed mathematically space was separated from time by leaving Time expressed as 1D but space increasing angles of axis of freedom. It seems counter intuitive not to proportionately expand time with space.

[tysondennis]

Any ideas on worldbuilding for alternative universes with different laws of physics?

[quiet]

2nd dimendion of time is emotion.
Depends on emotion, time go fast or slow.( e)-motion ( the motion of e?
Motion is the phenomenon in which an object changes its position over time.
When we are happy time go fast and when are in agony time pause.
When we die time stop.We become time.
"My theory"
The feeling of time exist only in physical dimensions .

[holyknight]

I would want to think that elementary Calculus can explain the dimensions of time perhaps. All revolved around states of motion and relativity. An object at rest is in the first dimension of time, an object in motion at a constant speed or velocity is in the second dimension time, and an object that has a net force acting on it causing acceleration is in the third dimension of time. Or in other words, position, velocity, and acceleration, which can be accessed by basic derivatives.

[RocketMan-zcjr]

i was meeting an associate at a very small coffee shop. I waited 15 minutes and left. As i was 50 meters from the coffee shop, he call and said he is waiting for me for the last 15 minutes at the coffee shop. when i walked back to the coffee shop, he was there. the manager said he was there the whole time.

[jarrodyuki]

shut it down mortals are forbidden from discussing this topic.

[DJCoolKd]

“The math does not rule it out”
But does it account for it?
Sorry. I’m total shit at maths. Trying to get better & understand more mathematical concepts at a baby pace. The fathomability of a fourth dimension to me right now is like explaining a tax based civilization to a chimp. All things in time I suppose.

[hammadurrehman]

I think time has three dimensions just like space has.

[netbookeater]

If time and space are linked then if there are multiple dimensions of space wouldn't this be valid for time as well??

[Supernova-]

5 years later, quantum research has finally discovered/invented a new dimension of time!

[hudsorin]

This idea of other dimensions is good but measuring and quantifying them with objects and ideas in the current known dimensions is improbable it's like trying to look at infrared light the only way to visualize it is by representing it with visible light but then you lose the important part the infrared part