What were some of Albert Einstein's discoveries?

Answer 1

Albert Einstein discovered the Theory of Relativity, he stated that speed of light in a vacuum is constant and an absolute physical boundary for motion.

General relativity was Einstein's major work, and often considered one of the greatest of all time. It was not a discovery so much as an invention; it built upon the work he and others had already advanced in special relativity.

He also discovered the law of photoelectric effect. Calculating size of molecules for which he got doctrate.

Answer 2

Some of Albert Einstein's key discoveries include the theory of relativity, which revolutionized our understanding of space, time, and gravity; the photoelectric effect, which demonstrated the particle-like nature of light; and his mass-energy equivalence formula E=mc^2, which shows the relationship between mass and energy.