Word: electromagnetism
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...year (or so), the space reserved for government documents in Lamont will be a café. The addition of an open-late food venue in the midst of the Yard will be like switching on a giant undergrad electromagnet. Together with Loker Pub, these two student spaces will once more make the Yard area a viable place to gather at all hours...
...Japanese maglev sits in a low, troughlike guideway, paved with two rows of metal boxes containing aluminum coils. Built into the car's undercarriage are six superconducting electromagnets. When one of them passes over an unmagnetized coil, a current -- and an accompanying magnetic field -- is induced in the coil. The magnetic field in the track has the same polarity as the electromagnet and, since like poles repel, the train levitates off the guideway. As the electromagnet moves faster and faster over the coils, the magnetic force becomes more powerful, raising the car to its cruising height...
...obstacles remain. One is the need to form the new materials into usable shapes. While metals bend, anyone who has dropped a dinner plate knows that ceramics do not. And a flexible material has a big advantage over a brittle one if it is to be coiled around an electromagnet. Says Osamu Horigami, chief researcher at Toshiba's Energy Science and Technology Laboratory: "To get a magnet or coil or even a wire we could use with complete confidence could take another five years." Agrees Hulm: "It will take extraordinary engineering to solve the brittleness problem...
...item is on everyone's list of potential benefits of high-temperature super-conductors: maglevs, or magnetically levitated superfast trains. It is a safe prediction, since the new materials give promise of electromagnets far more powerful and economical than those in use today. And it is the electromagnet that lifts and propels existing maglevs in Japan, West Germany and Britain...
When 14-year-old James H. Gronen of Boulder, Colo., was disqualified two weeks ago for rigging his car with a secret electromagnet to win the 1973 All-American Soap Box Derby, it seemed that he was a boy whose all-American ingenuity was exceeded only by his guile. Now it turns out that his uncle and legal guardian, Robert Lange, founder of a ski-equipment firm called the Lange Co., taught him all he knew. In a letter to the derby director in Boulder, Lange said not only that the magnetic nose "has been around for years" but that...