Word: beene
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Dates: during 1990-1999
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On his return to Zurich in 1912 Einstein had a brainstorm. He realized that the equivalence of gravity and acceleration could work if there was some give-and-take in the geometry of reality. What if space-time--an entity Einstein invented to incorporate the three familiar dimensions of space...
With the help of his friend Marcel Grossmann, Einstein studied the theory of curved spaces and surfaces that had been developed by Bernhard Riemann as a piece of abstract mathematics, without any thought that it would be relevant to the real world. In 1913, Einstein and Grossmann wrote a paper...
General relativity completely changed the discussion of the origin and fate of the universe. A static universe could have existed forever or could have been created in its present form at some time in the past. On the other hand, if galaxies are moving apart today, they must have been...
When the Nazis came to power in Germany in 1933, Einstein left the country and renounced his German citizenship. He spent the last 22 years of his life at the Institute for Advanced Study in Princeton, N.J. The Nazis launched a campaign against "Jewish science" and the many German scientists...
The M in M theory stands for many things, says Witten, including matrix, mystery and magic. But now he has added murky to the list. Why? Not even Witten, it turns out, has been able to write down the full set of mathematical equations that describe exactly what M theory...