Who can imagine five-dimensional space? How should I imagine?

Four-dimensional space is a concept of time and space. Simply put, any four-dimensional space can be called "four-dimensional space". But the "four-dimensional space" mentioned in daily life mostly refers to the concept of "four-dimensional space-time" mentioned by Einstein in his general relativity and special relativity. According to Einstein's concept, our universe is made up of time and space. The relationship between time and space is to add a time axis to the three axes of length, width and height of ordinary three-dimensional space, and this time axis is an imaginary axis.

Scientifically speaking, a six-dimensional space has six mutually perpendicular directions (or axes).

The first, second and third axes represent the length, width and height of three-dimensional space.

The fourth, fifth and sixth axes represent the three vertical directions of stereoscopic time.

Time is "three-dimensional", which is the information revealed by China's ancient Book of Changes. Einstein was the first person to regard time as an independent axis. He thinks that time is not absolute, and its speed is different in different spaces. So he combined three-dimensional space with one-dimensional time axis to form the world-famous theory of relativity. Later, the mainland scholar Xue and the German mathematician Kaluza put forward the concept of two-dimensional time, thus forming the super-relativity of five-dimensional space-time (three-dimensional space plus two-dimensional time). ( 1920)

Kalucha's theory proves that gravity and electromagnetic force will automatically unify in the five-dimensional space-time structure. 1960s, weak force and electromagnetic force were successfully combined, and then strong force was absorbed into the unified framework. As for the universal unified energy field that controls strong force, electromagnetic force, weak force and gravity, it didn't dawn until1980s. The "superstring" theory put forward by Professor Green of England (University of London) and Professor Schwartz of California Institute of Technology has preliminarily verified that adding supersymmetry to string theory will show the effect of gravity. Now theoretical physicists say that at the beginning of 2 1 century, the unified energy of the universe will be uncovered. The laws of natural operation will be gradually understood by human beings.