Word: spins
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Dates: during 1970-1979
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...flywheel can be kept rotating longer if its weight or its initial rate of spin-or both-is increased. Trouble is, top speed is limited by the strength of the flywheel's material. Had the Electrogyro's wheel been spun much faster centrifugal force would have ripped it apart. In the vehicles being equipped by Lockheed for San Francisco, the flywheels will be revved up to 12,000 r.p.m.-fast enough to drive a fully loaded trolleybus (80 passengers) for six miles. To keep such fast-moving machinery in one piece, say Lockheed engineers, they will...
...motor rather than to drive the wheels directly. If the flywheel's speed drops below its normal operational minimum (6,000 r.p.m.), the motor can be operated on power from overhead electric lines. Simultaneously, this power source-or in the future, underground transformers-can also be used to spin up the flywheel again...
From several standpoints, nuclear power seems an ideal answer to the continuing energy problem in the U.S. For utilities, it makes economic sense to construct plants that use heat from splitting atoms of uranium to spin turbines that generate electric power. Though the average plant costs 10% to 30% more to build than one that burns coal or oil, operating costs are much lower. Nuclear plants are also relatively kind to the environment. They discharge hot water that can harm aquatic life and change the characteristics of lakes; but they cause no air pollution, no spills at sea, no strip...
...anticipation of seeing Robert Redford as Gatsby, his dream of being reunited with Daisy about to be realized, has my emotions gripped sufficiently to make me want to rush to see the film. The spin-offs have nothing to do with my reason for wanting to go. I just want to see Redford play that scene and enjoy it as I feel my heart go pitter...
...only 1% as strong as the earth's) and an extremely thin atmosphere of helium, argon and perhaps other gases (less than 0.1% as dense as the earth's). Although the earth's magnetic field is generally attributed to the churning of molten iron in the spinning planet's core, Mercury seems to rotate much too slowly to produce such a dynamo effect. But scientists offer alternative explanations. Mercury's magnetic field may be created externally by bombardment of charged particles from the sun hitting the atmosphere-or it may be left over from...