# Movie: What is a dimension? In 3D...and 2D... and 1D

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## Comments

TheMrFloorball

if we could define our world a 1D line, we have to pass the following point

on the line before reaching another point, we couldn't go directly there

on the line before reaching another point, we couldn't go directly there

SparkySywer

If we lived in a 1d universe, the 1d universe couldn't curl up on itself.

Sarah Kettell

*What is a Dimension and Do We Actually Live in a 1D World?*

This is probably one of the most interesting and intelligent discussions

I've ever read in YouTube comments. The video itself is good enough, but

the comments make you think.

This is probably one of the most interesting and intelligent discussions

I've ever read in YouTube comments. The video itself is good enough, but

the comments make you think.

cuddlepartyatmyhouse

If it was one dimensional but curled like yarn. A thing would have to

travel all the way around the universe on that line until it ended up on

the line next to it. Therefore a photon would take many times the age of

the universe to move to an adjacent "tread".

travel all the way around the universe on that line until it ended up on

the line next to it. Therefore a photon would take many times the age of

the universe to move to an adjacent "tread".

3snoW

Space filling curves aren't at all what you are saying. If you truly fill

space (be it 2-D or 3-D) using only a 1D line, then for any points A and B

in the curve, if you were to follow the line from A to B, you'd travel an

infinite distance. So, it's not like we could use only one coordinate that

would tell you the position in the line (and therefore in the space) you

are at, all the points are infinitely distant from one another so there is

no metric. You NEED more dimensions to fully describe the space.

What you CAN argue is that you can do an approximation of a space filling

curve. A 1-D line that does not pass through every point in space, but that

passes nearby every point in space. And by nearby i mean that the shortest

distance from any point in space to that line is always smaller than the

Planck's length. Then, you *could* argue that you can describe 3-D space

using only one coordinate, because any distance smaller than the Plank's

length doesn't make much sense, and therefore, as far as your calculations

are concerned, the line does pass through every point in space, and is

1-D.

space (be it 2-D or 3-D) using only a 1D line, then for any points A and B

in the curve, if you were to follow the line from A to B, you'd travel an

infinite distance. So, it's not like we could use only one coordinate that

would tell you the position in the line (and therefore in the space) you

are at, all the points are infinitely distant from one another so there is

no metric. You NEED more dimensions to fully describe the space.

What you CAN argue is that you can do an approximation of a space filling

curve. A 1-D line that does not pass through every point in space, but that

passes nearby every point in space. And by nearby i mean that the shortest

distance from any point in space to that line is always smaller than the

Planck's length. Then, you *could* argue that you can describe 3-D space

using only one coordinate, because any distance smaller than the Plank's

length doesn't make much sense, and therefore, as far as your calculations

are concerned, the line does pass through every point in space, and is

1-D.

Michael Bomsdorf

How do we know we live in 3 dimensions?

martijn van weele

if you curl up a line it automatically becomes at least two-dimensional,

your argument is invalid.

your argument is invalid.

kamiab ayani

Plz make hour physics as well and explain in more detail as well . I love

ur channel

ur channel

Harrison Desa

-31

Bryan Mendoza

-32

Austin Carpenter

The moment you bend something, its not one dimensional. Simple as that.

Stijn Dijkstra

what if back in time(if time exists O.o), humans started thinking in more

than 3 dimensions? is it excally the world that is in 3 dimensions, or our

mind that thinks there are 3 dimensions?

than 3 dimensions? is it excally the world that is in 3 dimensions, or our

mind that thinks there are 3 dimensions?

Ilex Swails

NERD

toshineon

This reminds me of an arguement I had with a friend a long time ago. 3D

movies (the crappy kind with the red and blue glasses) were all the rage

where I live at the time. My friend asked why you call a game on

PlayStation 3D when it isn't actually. I tried to explain that the games

image is rendered in 3D, but since the television set can't output a 3D

image, the picture itself is 2D. We would talk about this for hours on end,

never settling the argument... Ah, good times.

movies (the crappy kind with the red and blue glasses) were all the rage

where I live at the time. My friend asked why you call a game on

PlayStation 3D when it isn't actually. I tried to explain that the games

image is rendered in 3D, but since the television set can't output a 3D

image, the picture itself is 2D. We would talk about this for hours on end,

never settling the argument... Ah, good times.

GooseGaming

1 Direction = 1D not the band.

SuperEclipse24

And 0D is the dot

Bava Neche

In Creation -- A singularity of Nothingness and is the "1st Dimension". The

moment "Anything" is created in that Nothingness it becomes an automatic

accumulation of the Geometric Configurations X, Y, and Zed, called 2nd, 3rd

and 4th Dimensions. Moving beyond those 4 Dimensions automatically creates

Time which is an accumulation of dimensions which are "Direction", Distance

and Speed which is the 5th, 6th and 7th Dimensions. The Next Dimension is

made up of another accumulation of dimensions is 8th Dimension of Mass, 9th

of Ampliflication and the 10th of Frequency. The 11th Dimension is the

Matrix that holds it all together.

moment "Anything" is created in that Nothingness it becomes an automatic

accumulation of the Geometric Configurations X, Y, and Zed, called 2nd, 3rd

and 4th Dimensions. Moving beyond those 4 Dimensions automatically creates

Time which is an accumulation of dimensions which are "Direction", Distance

and Speed which is the 5th, 6th and 7th Dimensions. The Next Dimension is

made up of another accumulation of dimensions is 8th Dimension of Mass, 9th

of Ampliflication and the 10th of Frequency. The 11th Dimension is the

Matrix that holds it all together.

john michael

dont get it...why cant u draw a curled line thro all the hot air atoms

Dennis Liu

Really Henry, you are LESS... MUCH Less excited or sounds excited, at

least, than before... I wish I can have the old henry back =(

least, than before... I wish I can have the old henry back =(

Darwin Kim

is the music at the end backwards?

Pitr

These oversimplified "descriptions" suck. They assume people aren't smart

enough to understand the real deal so instead they give a faulty

description that send people down the wrong path.

enough to understand the real deal so instead they give a faulty

description that send people down the wrong path.

Leo Nordmann

awesome vids thumbs for that :D also damn u they are too good u took my

sleep now :D

sleep now :D

Hector Carrillo

Leave this discussion to 10thdim please

youhakin

Good for share !

Emmanuel Lescouflair

I still haven't learned what a dimension is. I guess I'll continue my

search elsewhere.

search elsewhere.

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