The interrelation between time and space is a fundamental concept in physics, as described by the theory of relativity. According to Einstein's theory of general relativity, space and time are interconnected in a four-dimensional framework known as spacetime. This theory suggests that the geometry of spacetime is influenced by the presence of mass and energy, and the motion of objects within it.
One consequence of this interrelation is that the measurement of time intervals and spatial distances can vary depending on an observer's relative motion and gravitational field. This phenomenon is commonly known as time dilation and length contraction. It means that different observers, moving relative to each other or experiencing different gravitational fields, may measure different time intervals and spatial distances.
In special relativity, the theory specifically addressing uniform motion, time and space are considered parts of a unified entity known as spacetime, and measurements of time and space intervals can be mixed and transformed through Lorentz transformations.
In summary, the interrelation between time and space arises from our understanding of physics and is supported by empirical evidence. It is not merely a limitation of our measurement capabilities but rather a fundamental aspect of the universe as described by modern theories.