Dimensions in string theory

[Guille]

I keep trying in imaging a two or a one dimensional object in my head, but I simply can't. They always end having three dimensions.


Do any of you have a way of imaginating one or two dimnesional objects?

[AntonioLao]

Do any of you have a way of imaginating one or two dimnesional objects?

using concepts from projective geometry (use by architects in drawing perspectives), the one-directional projections of a 3D shape is a two shape. The one-directional projections of a 2D shape is a 1D object. In perspective drawings, all parallel lines meet at a point at infinity.

[Guille]

that's why we can't fisicalize a 4d object (not 4=time, but 4 spatial) because when we create a square, with, for example, an inn-side 4rth dimension, then it is just a 3d representation of a 4d object. As when we draw a 3d object in a paper, it is just a representation.