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From: minutephysics
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  • @DrZudsi well, think of it like 0D=point... it takes a lot of points to build a line=1D, then a lot of alinged lines to create an area=2D, and a lot of stocked areas to create volume=3D... i think when people say 4D is time, they mean that it takes a lot of volumes (one at a time) to create time streams and so on:)

  • @MyFiveSeconds the fourth dimension as time comes from the considerations of relativity. General relativity is formulated with something called a Minkowski space, which has 4 dimensions, not 3. However, the 4th dimension works differently than the other three (it isn't symmetrical with respect to that dimension) which explains why space seems to be fundamentally separate from time, even though spacetime is actually only one thing.

  • Um, a "one-dimensional line" is a paradox. By definition, one dimension can only contain (and by extension be) a single point.

  • @TheVerandaguy that is what I'd like to think too, because it merely makes sense, but take your thought further and you get: 1D=point, 2D=line, 3D=..... at this point 3D would equal an area(x and y), which would mean that a cube is 4 dimesional (x, y and z) which it is not, simply per definition. Dimensions are defined like 0D=point(=1 or x^0), 1D=line(=x or x^1), 2D=surface(=x^2), 3D=volume(=x^3)

  • With your fractal space-filling curve you still need two coordinates to specify any location on it (except where you define zero to be). Trying to travel, say, 2 units from a given location becomes a meaninglessly complex task because the curve has an infinite amount of detail. In other words, every set of two locations have an infinite amount of distance between them, no matter how "close" you try to choose them.

  • so what does a 4D perspective look like?

  • Going from 1D to 2D is actually quite simple when you deal with integers. It goes 1,1 - 1,2 - 2,1 - 1,3 - 2,2 - 3,1 etc. From there it's quite simple to go to higher dimensions.

  • We define the number of dimensions we live in by what we experience. If we only experience life in 3D, then so be it. However, to argue that more dimensions exist, one must prove as such. To prove it, one must show that interaction with additional dimensions is possible. If the interactions are insignificant enough that they have absolutely zero effect on reality, then guess what? No real interaction. That's my opinion, anyways...

  • @AlphaVinigre You are correct. I believe that other dimensions could and most probably do exist, but until hard rock solid facts are pressented, I will do most logical thing- not to believe in existence of other dimensions.

  • 70 people thought the video was in 3D

  • You can look at gas, but you can also look at black holes. And black holes indicate that the maximum entropy contained in a region of space is related to the surface area of the black hole - not it's volume.

    Some quantity of our reality seems to be two dimensional at least.

  • Are pixels one dimensional?

  • I'm confused on how 1 dimensional curves can make up 3d space.

  • @xSpectrumGaming The concept is a theoretical construct in which space is filled by a line with infinite curves. It is hard to grasp because you grew up with space as being 3D hence your comment saying 3D space, but in this theory space could also be filled by a line with an infinite number of turns. In this way you could determine your position in space by measuring your distance along the line, therefore space can be defined in one dimension.

  • @mazell1988 We use 3D to define space however because it is much simpler to have three measurements to make since everyone can perceive three dimensions and therefore measurements remain consistent. If you where to measure things based on a line and two people drew their lines differently the object would be defined as occupying two different positions by two different people even though it never moved. If we could perceive time as a dimension it would be a 4D coordinate system etc.

  • @xSpectrumGaming imagine taking a giant piece of paper and curling it into a ball, then take that a step further, and imagine that the paper has infinite folds, so you can't tell if it's folded up, or if it is solid. that's what he is saying about space.

  • @DarioColon

    how the ell did he do that???? O_O

  • i got 3d glasses! -D---D-

  • My house > London > The Moon > My Garage.

    Just where is your garage?!

  • @TheMonkeyWithTheHat andromeda, where is your's?

  • Vihart, are you taking hormones?

  • Do one on the possibility of the fourth dimension , Many people believe we are in a 3 dimensional world and we cannot understand the fifth dimension because we do not live in it or a higher one than it!

  • I thought it was 11 dimensions///

  • @00Billy Theoretically there are 11 dimensions, but we only live in / experience 3 (4 if time counts)

  • @thetechanatoralt

    Sometimes I can't even find my ass...with both hands... i think it goes to the 9th for short periods/

  • @00Billy There are 12 [dimensions]

  • @KageTori12

    now if I mentioned the number 22... would their be a high eisenberg factor of my stupidity? lol

  • @KageTori12

    meant to add... wouldn't it be better with 11 or 13? nice juicy prime number ?

  • 3-d works in real life. So that is why we use it.

  • Disagree, all these scientific facts about the relation between volume and radius in diffusion is concluded as we observe it in this 3-d world. Your assumption and conclusion are circular. There is simply no way to determine it.

  • WTF. CRAZY COMMENTS EXPLODING EVERYWHERE.

  • we are 3d. full stop. end of story.

  • @nerdybrony isn't time the 4th dimension? 

  • @newlyrisen true point. we are 4d. end of revised story.

  • Comment removed

  • Gabe newall is the fourth dimension.

  • This is wrong.

  • To fast and brief. How do you expect people to understand?

  • this guy vs vihart

  • WAIT A SECOND if the line would be cureld up it wouldnt be at least 2D because 1D is just a straight line ?

  • @kleinesmaenchen true that...

  • what a stupid thing to consider....curved line...pf

  • what is 4D?

  • @PrinceCharrrming

    3D + smell. I think it's when I put on 3D glasses and ride a ride at a theme park. I could see 3D images coming at me and smell them too. lol

  • We live in 4d. But we can only see in 3d. Look at your palm. If you were able to see in 4d, you would be able to see the back and front of your palm

  • @TheUnicornslayer I don't think you understand dimensions.

  • I wish you'd do more than one minute. These are fascinating. I've long been annoyed at my lack of grounding in physics.

  • Comment removed

  • But you didn't explain what a dimension is, only why we live in 3D.

  • You forgot 4D.

  • Copy and paste that weird comment and then hold delete and watch as the letters go away. It's weird :3

  • press 5 for ass

  • I don't understand ANYTHING this guy sais, but at the same time I know exactly what's going on.

  • flatland FTW!

  • @MrQStew I like this observation. But if there are infinite points between 1 & 1.1 and between 1 & 10 - how comes, when applying the same thought to time, 9 seconds feels longer than 0.9 seconds.

  • @richyantwi i am not a physicist/mathematician, but i think you're conflating between the cardinality of infinity and actual discrete units of time.

    with infinity, you can do all sorts of crazy maths to prove anything (there's another minute physics where he makes infinite = -1). so it's best not to conflate the two. someone else probably has a better answer.

  • @simulcra Thank you for your quick reply.

    Yes, essentially I am comparing the Cardinality of Infinity and the Cardinality of Time. A second is, as you say, a discrete unit of time - this is just as discrete as whole numbers. But you you can get Granular with both of them... It's weird but compelling to think about.

    But I think you're right in your implication, that I am missing something. That's why I watch minutephysics hehe. I saw that vid on "infinity = -1". Another interesting topic.

  • I'm just here for the prettz pictures... hahahahahah :D

  • They show a diagram of THE FOURTH DIMENSION! At 0:58!

  • @minutephysics Please make a video explaining the fourth dimension. I had a question, as well: isn't the fourth dimension essentially a graph of the 3-D object versus time, showing the past and the future as parts of this graphs? If so, could the scale not be narrowed down to a single atom, tracing its path through the Universe? PLEASE make a video on this!!

  • Try to explain what 4D is! That would be very interesting!

  • @DrZudsi 4D explaination:

    in 3D coordinates an object's positioning is determined by its longitude, latitude and altitude. But 3D does not show WHEN the object is at that position, thats where the 4th dimension comes in, time. An object in 4D's positioning is still determined by latitude, longitude and altitude but the point is time when the object is in that place is also given. I hope that helps =]

  • @Neutrino980 Eistein concluded that the fourth dimension was time, but he's been wrong before. He also thought that you could go in a straight line through the universe, and eventually return to where you were before: This would not be possible unless there was a physical fourth dimension of additional space that we cannot witness, or are so accustomed to that we don't notice. I have a theory about this, but I don't really want to explain it where everyone can see.

  • @Neutrino980 @DrZudsi How would you describe 5D? Or is there a 5D?

  • I never know what this guy is talking about....:( 

  • I Love watching minutephysics! They make me so happy and calm ;D

  • just fyi, as i keep seeing it in the comments, 4D in physics is typically x+y+z+time :)

  • this is bs

  • O͍̪̣͈̭ͨ̉̐́̓ͮĥ͔̫̯̖̦̟̙ͨ̌̊͗͑̚ ̰̲̦͓̥c̦͇̣̣̠r͖͓̳͖͔ͧ̃̃ȧ͓̼ͬp̥.̣͈­͍͕̯̮.͕̂.̤̯̲͔͑͋̓̅ͯ̾I͉͉̳̳ ̺̒th̟͕͙̅ͧiͩ̐ͪͦn̖͈ͩk͍̘̀͊ ̮̰̀̾͊̒͑ͪͣĬ̦̻̟͈̜̦ͩ͗ͦ ̹͎̭̠͙ͫ̏m̮̔ȯ̠̜̾̎v̲͔̹̯̲̺̤ë͆͐ͮ̓­̂d̖̩̪̑̅ͮ͑ͪͣ ͔̬̗̟̟̲̳̽̍i̹̠ͨ̔ͨn͚̈̑͆ͭ̌ͅt͉ͨ̐̐͗o­̤͕͂̊͋ ̤t̲͉̬͐͛h͙̬̳͚̪͑ͣ͋̈ẹ̙̞ͫͥ̃͋̎ ̺͙͖̗̩f̖̘̭̫̠̼͇i̮̦͍̰͇͋̆̂f̖̭̙͇̬̞̻­t͚̤̩̟̟͌̀h̳̺ͯ̃̆ ͇̘̮̞ͧ̋͐ͤͥ̋d̳̱́̇̑͑ͯi͙̻̮͇͙m̜͉ͭ͋̈́­e̬͉̾ͮnͥͩ͊̆s̰̳̰̥͈ͪ͐͌̿ͤiͨͯ͐̄̎oͯ̊­̩͖̮͔̼̳̹ͯn͇͎̭͓̼̩̒ͬ͂ͅ.̙̭̅ͨ͒͒ͭ̓ͭ.­̲͋͌͑̔͗̊̿.̘̊ͦ̄ͧͧͅ

  • @DarioColon nope. zalgo

  • @elektronikc Nope, C͉͔̩̻͍͇͍͍͛̃ͩ̑̚̕ḩ̷̣̽ͤͩ̑͂̓ͣ̎u̓̀­̡̫̟̪̩̺͇͔͈̏ͧč̷̨̭̻͖̅̓͜k̨̲̉͌͑ͣ̚͜­̦̗ ̘͖̏̔̎̈͜T̘͎͙͇̲͉͇̖̒͊̀͒ͅe͆ͥ̇̈̎͌̀͜­͙̺̬̼̺̝ͅs̴̭ͣ͗ͪͨ͑ͯ͛̂̏t͉̯̩͍ͪͦ̕ͅaͨ­̲̞͎̲̦͖͚̏ͭͩͣͬ̀́.

  • @DarioColon zalgo is for noobs ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็­ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็­ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็­ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็­ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็­ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็­ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็­ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็­ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็

    ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็­ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็­ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็­ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็­ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็­ส็็็็็็็็็็็็็็็็็็็็็็็็็็็็็­ส็็็็็็็็็็็็็

  • @̣̣͎͎̥͔̟̿Ḍ̺ͩ̋̆͝ạ̜̘̣͓̜ͥ̐̈̆̚r̃­̾ͩ͊̆i̗̞̪͈̘̽̄͂͂̓͒̀o̤͔̭ͤ́Ć̐̽͆̉ͩ­̲̖̳̱o̩͓̼̘͘l̞̤͔̠̣̺̊͛́̚͜ͅo̔̽́̏̎̓­̧̘ǹ̟̩̚ ̠̙͚̾̊ͣ͠Ṁ̴̲͉̜͕̠̤͚͆ͤ͆e̼ͥ̆͡ ͉̭͔̳̠̭t͂̓̓̐̚҉̞̩̞ȍ̸̋ͯ̋͆ŏ̭͈!̾̔­̺̪͇!̸͍̖̗̦̘̦ͥͯ!̢͇̬̘̈ͨ̑ ͩͫ͡:̭͓̱͔̱̣̽̔͆͊Ǒ̻̥̗͖̰ͅ

  • @DarioColon How did you make that. I Googled it and Google said they could process it.

  • @ModelThree64 Use the text generator at eeemo.net

  • since 2D isn't directly observable (we keep thinking everything is 3D) does that mean the comparison is between theoretical 1D and observable 3D ?

  • @piecharthosen oddiest thing is if you observe 2d on a 3d plain it would be both 1d and 2d. in theory there is a break between the two.

  • You should do a video what 4D really is! thumbs up if you agree :)

  • What about 4D?

  • @BEAVER7014 that's the "and so on" part.

  • ow my brain

  • My GF ass is 2D clearly

  • 550D FTW!!!

  • I watched this in 2012. :)

  • 3 Ds. LIKE MY GRADES !

  • @LawrenceTun 2 D's LIKE THAT ONE HOT CHICK!

  • @LawrenceTun That is terrible.

  • whoa!…wait…what?

  • ......what?

  • apprently i heard from people there are more then 20 dimension but we havent discovered yet is this ture??o---o?

  • @Dahellox3 11 dimensions

  • wait... higher dimension? what are they??

  • @rockrick1988 4th dimension, scientists believe that we live in a 4 dimensional sphere. that 4th dimension is said to be time. so its ( x, y, z, t)... so if we ever build a time machine, time would be a vital coordinate

  • @XxIshxXCwalk ok thanks :)

  • @rockrick1988 nop :)

  • This is similar to an observation I made. If you get down to small decimals, you realise that there are equally as many numbers between 1 and 10 as there are between 1 and 1.1. If you just keep adding decimal places and going on, the number of numbers between approaches infinity, just like the number of points on the curve being equal to the number of points in a given space.

  • I have watched 16 minutephysics videos, some vsouce and SmarterEveryDay. Now my mind is totally fucked 

  • The 4 dimension is the time dimension.

  • U speak too fast, only see the drawing and understand only 26,7% (or less)

  • Hi guys!

    Well first, I'm not a physisisisisisist (damn grammaer :) so please judge me on the 'easy-level'. However, my question to you guys: Is it possible to assume, we actually ARE on a curled line defined by us as "time" on which we see "space" wich is actually the same line in a different point of view somehow linked to the same time (maybe touching/crossing the "time"-curve? Might it be that the relation time/space is coorelating such as that given us the Illusion of living in a 3D world?

  • so what does 4-D look like?

  • @blackdragon1426 The 4th Dimension is time.

  • @blackdragon1426 We don't know. It doesn't exist here.

  • Didn't get a word you said. Sounds like you're educating scientists that already know the terms and physics. Explain it in words where normal people can understand. And don't say that I'm retarded for asking. I'm not a fucking science major. An average person should understand this. Unless your channel is all about refreshing scientists memories.

  • @PsYc01025 I'm not a scientist and I understood this pretty well.

    Pretty much everything he says in here is really understandable (assuming you paid enough attention in Middle School level shit) Diffusion (molecules spreading out), the three dimensions, curves, etc.

    If you're having trouble understanding this video, break what he says and think about it. He's not here to break everything down for you, he only has a minute time frame to present a new way of thinking about shit.

  • @silveRxG Ignore this guy, he's just flashing his internet junk.

  • @PsYc01025 This was one of easy videos.....

  • thumbs up if ur only watching for the drawings :P

  • @minutephysics i don't think you understand algebra or topology... there are pretty good mathematical definitions of dimension.

  • i feel stupid

  • i used to live in 2d until i took an arrow to the knee

  • @TPeters321 HA you're hilarious! not really...

  • @TPeters321 Wow i hate that arrow to the knee stuff

  • GOD DAMMIT T-MOBILE... I already have a cellular service provider... GAH

  • 3d is related to Diffusion of Gas.....Strange......!

  • i just waned to know about 4D . u should explain it to. Watching movies in 4D  0_0

  • @Mr007eds The fourth dimension is time. You can think of each dimension as a direction (up/down, forwards/backwards, left/right and next/last).

  • Sometimes i think scientists just love making up theorys out of everything

  • @MrFunyyy Because you're to much of a dumbass to understand. Go and read your bible.

  • so... Why does the movie theater charge me so much more for a 3D movie?

  • ...i don't get it...

  • How bout 3 minute physics to explain it properly?

  • *without the.....

  • What if we think of dimensions as the basic properties for matter to exist? With the 3 dimensions if space and one of time matter can never exist. We can say the same for energy. So can energy be considered another dimension?

  • That would Conveniently explain alot of "Modern" Life, don't believe everything You Think

    You See, hehehe*

  • Most, if not all matter can be described in fractional dimensions. The notion of whole number, orthogonal dimensions doesn't match what we can now see.

  • We live in 11 dimensions. We can only sense 3... possibly 4.

  • WAT.

  • Do 4D!

  • Try telling my mathmatics teacher the side of a square has for points and I'll have a month of tutoring...

  • @MinutePhysics "every point in space can be labeled just one coordinate"

    Could you explain that more precisely, please? It doesn't make any sense to me and I am studying mathematics - and I highly doubt this statement is true!

    I do really like your videos, but sometimes I feel like you don't always know very much about the stuff you're talking about, just as in this case.

    Convince me of the contrary!

  • @mag2XYZ Fill a box with string (assume there's no space for air left over). Any point in that box can be represented by how far along that string it is. Instead of challenging the knowledge of the video maker, you COULD just google it/use common sense.

  • @s036055 good example not the best though string in itself is 3 dimensional but i understood what u were getting at

  • @Uebermenschman No that's the entire point. As long as the measuring perspective is 'a' dimensions, you can reference 'a' dimensions with one co-ordinate =). The issue here is people thinking you can use the number of co-ordinates we use to determine the number of planes.

  • Should really make a video about the 4th dimension its the most interesting thing ever

  • someone should explain the dimensions above 3 to me

  • We're trying to determine the dimension we're in based on studies in our confined dimension?

  • MY BRAINS EXPLODED

  • am i the only person who has no idea what hes talking about?

    physics is my thing, yet everything you say sounds too complicated for my ears :\

  • @SuperCrazyIdiot im not sure the maker of this video really understand what he is talking about. a quote supposedly from einstein (but regardless who said it, i completely agree with it), says "if you can't explain something simply, you don't understand it well enough"

  • What happened to length, width, breadth, and time?

  • Arrgh this is fucking with my mind.

  • How about we just call it "nerdvision" and move on?

  • Isn't it not possible for something to be in 2d?

  • If anyone knows the name of this theory could you respond, please? :)

  • i love the pretty drawings :D

  • 100D FTW

  • @nour5629 Any number of dimensions above 11 would make the universe unstable. How do i know this? Basic string theory.

  • You claim we think we live in 3D... But technically the theory is that we are 3D, but living in a 4D universe(with time being the 4th dimension)

  • most people have 2D minds in 3D world :)

  • 6D movies :O

  • you drew a 4d object on a 2d sheet of paper.... impossiburrrrr

    (i know i know, it ain't 3d either, but at least it can be considered a projection of a 3d object)

  • This is a silly theory. We use x,y,z system because it's the easiest way to map any coordinate. There's no right answer. It's not something that already exists, the system is created by people, and the most efficient system should be used. It's just a silly idea.

  • @DustinTROM Well that's kind of his point - he's explaining why x,y,z is the best system. He points out that there are alternatives, then says that if you want to describe how gasses diffuse, you better be using three dimensions! It's not so much a theory about what's out there, as an exercise in asking ourselves why we think about things in the way that we do.

  • @DoctorFastest Incidentally, some physicists nowadays are experimenting with working in n-1 dimensions instead of n dimensions (where usually n=11) to see if that makes the maths easier. So far, the maths are too hard either way. ;)

  • so what do 4d look like

  • i wish i could understand one of your vids:(

  • @DarkGraff1 Do you have a question? Someone might try to give an answer.

    This is one of the more confusing ones though. It's hard to see what exactly the difference would be between three normal dimensions, and one really weird one that goes through every point. Is this just two different ways of describing the same thing?

  • @DoctorFastest One way to see a difference between the two things is to ask what predictions they make about how things should behave. Gasses spread out in the three normal direction, not along the weird direction that goes through every point. This, and similar results from other experiments, seem to tell us that three dimensions is the better way to describe things.

  • im just watching because of the drawings. derp, im a derp