Einstein’s field equation is the foundation of General Relativity—a theory that describes how gravity works. The equation: R_{\mu\nu}-\frac{1}{2}Rg_{\mu\nu}=\frac{8\pi G}{c^4}T_{\mu\nu} may look complicated, but let’s break it down step by step in ...

The energy-momentum tensor, also known as the stress-energy tensor, is a fundamental concept in the General Theory of Relativity (GTR). It describes the distribution and flow of energy and momentum in spacetime, acting as the source of the gravitational ...

Poisson’s equation is a fundamental equation in mathematical physics, appearing in electrostatics, gravitation, and fluid dynamics. In the context of General Relativity, it serves as an approximation of Einstein’s Field Equations under certain conditions ...

Albert Einstein’s theory of relativity revolutionized our understanding of space, time, and gravity. Two fundamental principles at the heart of this theory are the Principle of Equivalence and the Principle of Covariance. These principles provide the fou ...