Word: rotor
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...centrifuges. To bacteriologists who use more delicate centrifuges to whirl germs out of solutions, the name Svedberg is as familiar as the name De Laval is to dairymen. Lately at Sweden's University of Upsala, shy, black-eyed, Nobel Prizewinner Dr. Theodor Svedberg, 50, perfected two new rotors in which at normal operating speed a dime would press against the wall with a force of half a ton. One rotor he kept. The other he sent to the du Pont research laboratories at Wilmington, Del. There last week Dr. Elmer Otto Kraemer put the machine through its paces...
...centrifuge developed by Professor Jesse Wakefield Beams of the University of Virginia with the turbine operated by compressed air, the rotor turning in a vacuum. Rim speeds of 2,000 ft. per sec. and centrifugal forces 900,000 times gravity have been attained...
Captions explained the pictures. The man was a Pilot Erich Kocher. He flew by lung-power, utilizing the rotor principle. Strapped to his chest was an assembly of two horizontal rotors. He had skiis on his feet for landing gear, and a finlike tail attached to his stern. By blowing into a box on his chest, Pilot Kocher made the rotors revolve. The turning rotors created a suction ahead, into which Pilot Kocher & apparatus sailed gaily, while his excited friends trotted after him. The august New York Times, proud of its minute coverage of aviation, printed the picture...
...rotor functions like a spinning baseball or tennis ball. As ball or rotor turns it piles up the wind on one side. A suction develops on the other side. So the ball or rotor moves forcibly in the direction of the suction...
...utilitarians intend to build a train of such rotor-surmounted trucks and run them around a circular track half a mile in diameter. Thus, on windy days, power companies can draw current from the wind, can let their steam plants idle...