We misunderstand the meaning of "four dimensions"

Byzimbia

"We are living in a three-dimensional world where there are three dimensions" front, back, up and down, left and right ", and we think there will be four dimensions when adding the fourth dimension" time "there There should be many people. From being familiar with the world view that "If you put hands in the pocket of Doraemon, you are connected to a four-dimensional space", it is easy for me to think that the fourth dimension exists next to the world where we live , "A movie that explains that" It can not be said that there are four dimensions right in everyday life "is being published on YouTube.

There is no "Fourth" dimension


People frequently use the expression "four dimensions", but in reality there is no "four dimensions" as we imagine.


In the same way, the "three-dimensional" that we believe is present does not actually exist in the way we think.


Three - dimensional and four - dimensional are definitely existed, but they are not divided into winds like "three - dimensional" and "four - dimensional".


One dimension is a front and back line, a second dimension is a plane to which a top and a bottom are added one dimension, a third dimension is a stereoscopic model with left and right added, and it is said that "dimension" will increase as new directions are added to the space I will. However, it is not clearly decided what the dimension pointed to by one dimension, north, east, or upper is. It is nonsense that I say to the wind "This is the second, this is the fourth" as the elements pointed by the first dimension are not fixed.


Let's think about with the water poured into the jug. Pour 3 cups of water into the jug and you can see that there are 3 cups of water in the jug.


However, it is impossible to indicate which of the water poured into it is the first cup, the second cup etc. It is basically the same as this we point out that we are in a three dimensional world as "one dimension is kore and two dimensions are kore."


Inside "If you pour a cup of oil into the jug into which 3 cups of water has been poured, just as another water and oil will separate, if it adds another dimension, There should be some people who think that they should be distinguished?


Considering like this, it can be said that "a new element that is not in the three-dimensional world where we are living is the fourth dimension", "participate in three-dimensional" front-back, up-down, left-right " Some also argue that "time" will be added to the eyes. However, in the space where we live in the first place, time exists firmly.


And the possibility that the fourth dimension is the same as the dimension that appeared in the third dimension. The fourth cup poured into the jug could be the same as before, and the oil that I thought was the fourth cup actually was poured into the jug containing 4 cups of water, the fifth cup of oil There is also the possibility.


Dimension is a problem that can be thought with in the head thoroughly and it is possible to expand thinking apart from whether it actually exists or not. It actually does not existImaginary numberAssuming the existence of the number of, the existence of multidimensional is also widely used because it can solve the problem by assuming its existence, just as it can solve the equations that could not be solved so far .


For example, "The universe is a four-dimensional space + timeFive-dimensional spaceIt is possible to think that "Is not it?"


Super string theoryIn the case of thinking in, it can be thought that time was added to the nine dimensional space.


In addition, it may be dangerous even to decide that there are not more than two dimensions in time.


If you are confident that your brain is confident when you have newly recognized about the four dimensions, let's visualize the four-dimensional space on paper.


If you want to answer the answer, satire novels set in the 2D space written in the 19th century "Flatland multidimensional adventureWould you like to read ...?


Four-dimensional Rubik's CubeIt is good to play.