Dimension is the number of independent parameters in mathematics. In physics and philosophy, the number of independent space-time coordinates. Dimension 0 is an infinitesimal point with no length. 1 dimension is an infinite straight line with only length.

2-D is a plane, which is an area composed of length and width. Three dimensions are the volume formed by two dimensions plus height. Four dimensions are divided into four dimensions in time and space. People usually refer to the transfer of objects on the timeline. Four-dimensional motion produces five dimensions.

Extended data:

Two parallel lines can be regarded as two relatively independent dimensions, and a new straight line needs to be established to connect them from one line to the other. This straight line is the dimension.

/kloc-in the 9th century, mathematicians discovered fractal, thus creating a new dimension, namely "fractal dimension". People realize that dimensions are not only integers, but also fractions and even irrational numbers.

Professor Stephen Hawking, a famous British physicist, has this explanation: it is like a hair, which is a one-dimensional line from a distance. Under the magnifying glass, it is really three-dimensional; If we face time and space, if we have a magnifying glass with high magnification, we should also be able to reveal other possible 4-and 5-dimensional spaces, up to 1 1 dimensional space.