Word: seconds
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Dates: during 1990-1999
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Einstein's conclusions became known as the special theory of relativity. No matter how fast one is moving toward or away from a source of light, the speed of that light beam will appear the same, a constant 186,000 miles per second. But space and time will appear relative. As a train accelerates to near the speed of light, time on the train will slow down from the perspective of a stationary observer, and the train will get shorter and heavier. O.K., it's not obvious, but that's why we're no Einstein...
...extremely accurate timepiece was flown around the world and then compared with one that had stayed in place. If you wanted to live longer, you could keep flying to the east so the speed of the plane added to the earth's rotation. However, the tiny fraction of a second you gained would be more than offset by eating airline meals...
...despair that had hung over the land was lifted, replaced by a bustling sense of movement and activity, a renewed confidence in the future, a revived faith in democracy. "There is a mysterious cycle in human events," Roosevelt said when he accepted his party's nomination for a second term. "To some generations much is given. Of other generations much is expected. This generation has a rendezvous with destiny...
Clinton is the first Democratic President since F.D.R. to be elected to a second term...
...example, the code of the Mesopotamian city of Eshnunna in the early second millennium B.C., developed a century before the more famous code of Hammurabi, left no doubt what would happen if you punched a man in the face: a fine of 10 shekels of silver (a bargain compared with the levy for biting off his nose, which would cost 60). As long as people could go about their business without fear of getting their noses bitten off, the social brain could productively throb...