The earliest test of Albert Einstein's general theory of relativity took place just four years after he published it. During ...
In 1907, Albert Einstein had his “happiest thought” — people in free fall do not feel their own weight. This simple idea laid the foundation for his general theory of relativity, which Einstein ...
In June 1915, Albert Einstein traveled from Berlin to Göttingen. There, at the invitation of mathematician David Hilbert, he gave six two-hour lectures at the university on his treatise "The Formal ...