Show Fourth Dimension Defined The fourth dimension is II defined in mathematics as II the dimension added add ed to a three dimensional extent or aggregate to convert the former into a four dimensional extent PhysIcal Phys Phy leal Ical space pace is sometimes regarded as in the theory of relativity at II consisting of the ordinary three spatial dimensions dimension plus a fourth di dimension di di- mention time Ume and i is I. then known its as s time space continuum In this continuum each point represented by four co ordinates records an event of happening a line Une the interval interval inter inter- val vat life or history of the event and an area the history of a series terlet of events In the theory of relativity the space time space continuum ii le supposed sup up posed to represent physical reality physical laws being required to be stated with reference to it and an expression giving riving the differential di of the distance between any two of its It points |