Fourth Dimension—Spacetime
Our understanding of the universe did become a reality when we got an idea of length, width, and height. When we were done with these dimensions, we wanted more. We didn’t want to be stuck in the walls of the three-dimensional world. We spread the wings of our imagination, we searched for the thing that was responsible for changing the position of these dimensions. We looked for it in every direction, dimension to be precise. But didn’t find anything. We tried with calculations. Those calculations gave evidence of the presence of another dimension.