they would have no idea that humans exist. These beings would have their senses limited to two dimensions only i.e. To understand this, let us first imagine a two dimensional universe with two dimensional beings living in it. Now, lets get back to the main question: What would our Universe look like from the fourth dimension?
However, we can imagine what the projection of a tesseract in a three dimensional space would look like.
A tesseract is four dimensional object but we cannot see it because we’re entrapped in a three dimensional world. Now, to enter the fourth dimension, extrude the cube in a direction perpendicular to the original three directions. To enter the third dimension, extrude the plane in a direction perpendicular to the original two directions- you get a cube.Ī cube is a 3D object because it has a length, height and a width. Now, to enter the second dimension, extrude the line in a direction perpendicular to the original direction- you get a plane. To enter the first dimension, extrude the point in any direction you want- you get a line. it does not have any length, height or width. To get a rough idea about dimensions, let us start with a point. Humans, being three dimensional organisms, cannot sense or perceive these dimensions. Certain theories in physics suggest that our universe may have additional higher dimensions. Objects in 3D space have different lengths, different heights and different widths. Our Universe, as we can perceive, has three spatial dimensions and one temporal dimension.
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