Is there anything thats 2Dimensional in the world?

Question

don't say the pictures on tv.you have to be able to see it from allits sides like 360 degrees.also what is 4D.and don't say 4D is when you feel it becuz Disneys explanation 4D is not correct

paper is not 2D.it has height but it very small,but it is there.

Answer 1

Sandy G makes a good observation, but, may be more answers after I answer. We live in 3-D, this how we see and perceive the world around us. Technically, to really perceive 2-D we would need to exist in the Second Dimension (In Theory). The paper mention is close to 2-D (Width and Length) but with today's measuring instruments we have to admit it also have a thickness to it, thus, making the paper 3 dimensional. I have heard it said a Pencil Line " _________ " is two dimensional as in have width of the pencil lead and length as to how far we draw the line. But, Technically it still 3-D because it has to leave a thickness to leave it's mark. I hope you understand so far.
Now, in Theory of other Dimensions we could see only 2-D "IF" we were 2-D in thought. I know this sounds strange. But, we need to exist in the Second Dimension to perceive 2-D. It does exist there "IF" other dimensions exist. A person from the 4th Dimension may see our dimension as strange as they do perceive 4-D. We would also see the 4th dimension as strange to us. Could we see 4-D? I not sure, if our mind could perceive it if we were there.
But, TV may be the best example. Though we may still have to determine if there is any thickness to the light???
You need to read up on this. It a very interesting subject/theory. I read some books a friend of mine had and was fascinated with the ideas and some pictures people use to try and explain other dimensions.
But, in my opinion, 2-D does not exist in a 3-D world.

Answer 2

Two dimensional objects are objects that have only length and width, no height. So, no, in our 3-D universe, there would be no true 2-D objects.

What is 4D - the fourth dimension is usually referred to as time. Although another definition has the 4th dimension as the angle that is at a right angle to all the other dimensional angles. Like the second dimension is at a right angle to the first dimension, and the third dimension is at a right angle to both the first and the second dimension. So, the 4th dimension is at a right angle to the 1st, 2d and 3rd dimensions. Only we can't draw or construct such a 4th dimension without having another direction to go in that we can't comprehend.

See Carl Sagan's discussion: http://www.youtube.com/watch?v=lwL_zi9JNkE

Answer 3

You're talking about a actual, physical, complete object that exists only in two dimensions? No. The molecules that make up objects in the physical world exist in three dimensions, so nothing made of molecules can be truly two-dimensional.

4D is pretty much a mathematical abstract. There are people who hypothesize that a fourth spatial dimension exists in some way, outside our ability to perceive it, but there is no proof for this.

For further information, read "Flatland" and google "tesseract."

Answer 4

The surface of any flat object is 2 dimensional e.g. the surface of a piece of paper or a TV screen. Of course you can see it from various angles in 3 dimensions but it is still 2 dimensional.

The 4th dimension is normally understood to be time. You are moving along the axis of the 4th dimension as time passes.

Answer 5

Old Nintendo and computer games are 2D. Some parts of recent games (Crush and Paper Mario) are also 2D.

Answer 6

a drawing on paper

Answer 7

Religious thought.

Answer 8

this is a math question. i suggest reposting this question under the math/physics section.

Answer 9

a piece of paper... its sides are almost non existent its so flat... so thats my guess