Word: ende
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Dates: during 1990-1999
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...mass-produce the horseless carriages developed in Germany by Gottlieb Daimler and others. The car became the most influential consumer product of the century, bringing with it a host of effects good and bad: more personal freedom, residential sprawl, social mobility, highways and shopping malls, air pollution (though the end of the noxious pollution produced by horses) and mass markets for mass-produced goods...
Following World War II, Einstein became even more outspoken. Besides campaigning for a ban on nuclear weaponry, he denounced McCarthyism and pleaded for an end to bigotry and racism. Coming as they did at the height of the cold war, the haloed professor's pronouncements seemed well meaning if naive; Life magazine listed Einstein as one of this country's 50 prominent "dupes and fellow travelers." Says Cassidy: "He had a straight moral sense that others could not always see, even other moral people." Harvard physicist and historian Gerald Holton adds, "If Einstein's ideas are really naive, the world...
Toward the end of the 19th century scientists believed they were close to a complete description of the universe. They imagined that space was filled everywhere by a continuous medium called the ether. Light rays and radio signals were waves in this ether just as sound is pressure waves in air. All that was needed to complete the theory was careful measurements of the elastic properties of the ether; once they had those nailed down, everything else would fall into place...
Einstein's general theory of relativity transformed space and time from a passive background in which events take place to active participants in the dynamics of the cosmos. This led to a great problem that is still at the forefront of physics at the end of the 20th century. The universe is full of matter, and matter warps space-time so that bodies fall together. Einstein found that his equations didn't have a solution that described a universe that was unchanging in time. Rather than give up a static and everlasting universe, which he and most other people believed...
General relativity also predicts that time comes to a stop inside black holes, regions of space-time that are so warped that light cannot escape them. But both the beginning and the end of time are places where the equations of general relativity fall apart. Thus the theory cannot predict what should emerge from the Big Bang. Some see this as an indication of God's freedom to start the universe off any way God wanted. Others (myself included) feel that the beginning of the universe should be governed by the same laws that hold at all other times...