Word: electromagnetic
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...simple fix, either. An electromagnet in the vehicle's nose was connected by wire to a battery in the rear. The nose of each car lined up for the race rests flush against a hinged metal plate that drops forward into the asphalt at the start, allowing the vehicle to roll forward down the inclined raceway. As he settled back into his racer, Gronen's helmet touched off a lever that activated the battery and magnet, and as the metal plate fell forward the magnet's pull toward it gave his vehicle enough extra starting impetus...
Rand's plan for destroying tumors required an even more powerful magnetic field. To get it, he used an electromagnet cooled by liquid helium to near absolute zero. That produced superconductivity: the virtual disappearance of electrical resistance in the magnet. This allowed a greatly increased flow of current and boosted the strength of the magnet to 3½ times that of the best alternate magnet available...
Subtler souls might prefer other Matusow tactics-like erasing the magnetic coding on their personal checks by running the code numbers under an electromagnet. "The effect," he says, "is that your checks will not be processed by the automatic sorting device. Someone at the bank will have to handle them personally. But after all, it's your money, and it should get the loving care it deserves...
...fields needed in atom smashers and in controlled fusion experiments, superconductors will eventually replace bulky elecromagnets in these areas. A 1-lb. superconducting magnet cooled by a 200-lb. refrigerating system and powered by a 6-volt battery can produce as intense a magnetic field as an iron-core electromagnet weighing several tons and requiring 50 kilowatts of power. Entire trains could be suspended above their roadbeds in strong magnetic fields produced by superconducting magnets, enabling them to travel more smoothly and with less friction at speeds over 300 m.p.h...
M.I.T. students seem to like this new acquisition, though as one said, "It looks like an exploding artichoke." Other wits want to turn it into a giant electromagnet. The university intends to keep a careful eye out for pranksters: the student body is famed for its technological wizardry, once welded a trolley to its tracks while it picked up passengers. The ironworkers who put up the Calder had a more practical approach. Said one: "It's no different than putting up a boiler. We like...