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Word: km (lookup in dictionary) (lookup stats)
Dates: during 1950-1959
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Usage:

When Rogers reached 40,000 ft., he leveled off, and a ground radar guided him toward the 18 km. (eleven mile) course that is specified by the F.A.I. (Fédération Aéronautique Internationale) in Paris. He lit the afterburner and opened the fuel control to the limit. Quickly, the ship accelerated past Mach 2 (twice the speed of sound). The F.A.I, specifies that an airplane trying for a straightaway, level-flight record must not climb or dive more than 164 ft. over the course. To respect these narrow limits at better than 1,500 m.p.h...

Author: /time Magazine | Title: Science: Records Regained | 12/28/1959 | See Source »

Khrushchev's other highly touted "secret," relayed via Humphrey, was that Russia has built an ICBM with a 14,000-km. (8,700 miles) range, but has yet to test it. Ike was not surprised at the range, since such a distance is within theoretical reach of the rocket engines that powered Sputnik. The President was more interested in Humphrey's report on Khrushchev's general manner, physical appearance, tone of voice. Democrat Humphrey left the President's office to savor the experience of occupying the center of the world's biggest Republican news stage...

Author: /time Magazine | Title: DEMOCRATS: Candidate in Orbit | 12/22/1958 | See Source »

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