Chapter 399: There is No Such Thing as Perfection in the World

"Einstein's field equations describe gravity and gravitational fields.

In Newton's law of universal gravitation, mass is the source of gravity, that is, gravity can be generated with mass, while Einstein's theory of relativity further points out that both momentum and energy can serve as the source of gravity, and interpret the 'gravitational field' as 'spacetime distortion'.

By using Einstein's field equations, as long as we know the distribution of matter and energy in spacetime, we can theoretically calculate the curvature of spacetime, and the outcome of spacetime bending is gravity.

The interpretation of Einstein's field equations is not complicated, but in reality, what it describes is extremely complex, as it can be simply decomposed into a set of ten equations.

With such complex equations, mathematicians and physicists have conducted dozens to hundreds of years of research.