Experimental Way to detect 3-Dimensions of Time or Higher Dimesions of Spacetime: A way to test String Theory

We propose a physically realizable clock-based experiment that tests whether time possesses a multidimensional geometric structure. Three identical atomic clocks are mounted at the ends of mutually orthogonal rigid rods attached to a common hub and subjected to controlled inertial motion. Standard special relativity predicts that all clocks remain mutually synchronized, independent of orientation. We show that if time instead has three independent compo- nents associated with spatial directions, motion with nonzero velocity projections along multiple axes produces direction-dependent proper-time accumulation. This leads to measurable desynchronization between clocks oriented along dif- ferent spatial directions. The experiment constitutes a direct operational test of temporal isotropy and distinguishes scalar time from vectorial time. Observation of anisotropic clock rates would imply a six-dimensional spacetime structure with three spatial and three temporal dimensions, requiring a revision of Minkowski spacetime while preserving relativistic covariance in an extended geometry.