Dimension

Describing a dimension or several dimensions, if one imagines the whole thing in Cartesian way, how many dimensions start from the zero point. We live in three spatial dimensions. Albert Einstein extended his geometry to a four-dimensional space-time, whereby I already mentioned under Planck time that I also regard time as three-dimensional due to the equivalence of space and time. The String Theory ultimately assumes many more dimensions to solve the problems.

Everything higher than three-dimensional is fun to visualize. In normal physics books, the comparison is made of how two-dimensional beings would experience our three-dimensional world, or how we see a two-dimensional world. In the two-dimensional world, for example, you can omit the height. Life would be like a huge maze, and all living things would be flat or flat as the American says. You couldn't jump over the curb, a curb would be an insurmountable obstacle.

Nevertheless, we always imagine ourselves to be four-dimensional due to our school education. If you imagine it as a temporal sequence of three-dimensional spheres, you can already imagine four-dimensionality.

Lisa Randall, string theorist and advocate of higher-dimensional topology, gave a good idea of ​​the smallness of our three-dimensionality. Perhaps, according to her, the entire universe can only be imagined as a drop that flows down the higher-dimensional shower curtain of a higher-dimensional being. However, according to the absolute theory, this world should develop very slowly. The phenomena in the atom are insanely fast, the higher it goes, the slower it becomes. After all, it takes the earth 365 1/4 days to orbit the sun. Accordingly, we probably still have some time until our drops have dripped down the shower curtain.