Word: others
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Dates: during 1990-1999
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Many people--let's not pick on Al Gore here--deserve credit for creating the Internet, which began in 1969 as a network of university computers and began to take off in 1974 when Vint Cerf and Robert Kahn published a protocol that enabled any computer on the network 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 is really in pretty bad shape." Rather it seems to him that Einstein's humane and democratic instincts are "an ideal political model for the 21st...
The most careful and accurate of these experiments was carried out by Albert Michelson and Edward Morley at the Case Institute in Cleveland, Ohio, in 1887. They compared the speed of light in two beams at right angles to each other. As the earth rotates on its axis and orbits...
This required abandoning the idea that there is a universal quantity called time that all clocks measure. Instead, everyone would have his own personal time. The clocks of two people would agree if they were at rest with respect to each other but not if they were moving. This has...
If the earth were flat, one could equally well say that the apple fell on Newton's head because of gravity or that Newton's head hit the apple because he and the surface of the earth were accelerating upward. This equivalence between acceleration and gravity didn't seem to...