Who Discovered the Theory of Relativity?
Option 3 is the right answer.
Albert Einstein, in his theory of special relativity, determined that the laws of physics are the same for all non-accelerating observers, and he showed that the speed of light within a vacuum is the same no matter the speed at which an observer travels.
Albert Einstein was a German-born theoretical physicist. Einstein’s work is also known for its influence on the philosophy of science. He developed the general theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics).He was a nobel prize winner.