Einstein postulated three ways this theory could be proved ... Leopold Infeld, who worked with Einstein on a book on relativity, suggested, "people were weary of hatred, of killing. . . . Here ...

When an object moves extremely fast—close to the speed of light—certain basic assumptions that we take for granted no longer ...

Research from Aalto University could bring together the four fundamental forces of nature under a singular framework ...

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On 25 November 1915, Albert Einstein presented his general theory of relativity at the Prussian Academy of Sciences. This theory is still considered to be the most important idea in modern physics.