Word: real
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Dates: during 1990-1999
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...apologize to the husband of an old flame after Mileva discovered Einstein's renewed correspondence with her. He later complained that Mileva's pathological jealousy was typical of women of such "uncommon ugliness." Perhaps remorseful about the lost child and distanced by his absorption with his work--his only real passion--and his growing fame, Mileva became increasingly unhappy. On the eve of World War I, she reluctantly accompanied Einstein to Berlin, the citadel of European physics, but found the atmosphere insufferable and soon returned to Zurich with their two sons...
...suggest that bodies moving through the ether would contract and that clocks would slow. This shrinking and slowing would be such that everyone would measure the same speed for light no matter how they were moving with respect to the ether, which FitzGerald and Lorentz regarded as a real substance...
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 in which they put forward the idea that what we think of as gravitational forces are just an expression of the fact that space-time is curved. However, because of a mistake by Einstein (who was quite human and fallible), they weren't able to find the equations that related...
...been able to write down the full set of mathematical equations that describe exactly what M theory is, for it has added still more layers of complexity to an already enormous problem. Witten appears reconciled to the possibility that decades may pass before M matures into a theory with real predictive power. "It's like when you're hiking in the mountains," he muses, "and occasionally you reach the top of a pass and get a completely new view. You enjoy the view for a bit, until eventually the truth sinks in. You're still a long way from your...
...part of American culture as the drive for universal education, and the fact that both have existed concurrently may account for the low status of teachers. In America it is not enough to be smart; one must compensate for one's intelligence by also showing the canniness and real-world power of the cowboy and the pioneer. Einstein did this. He was the first modern intellectual superstar, and he won his stardom in the only way that Americans could accept--by dint of intuitive, not scholarly, intelligence and by having his thought applied to practical things, such as rockets...