Word: barriere
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Aeronautical Engineer Richard Whitcomb literally changed the shape of modern aviation when he designed the "Coke bottle" fuselage - a narrow-waisted plane body that helps high-speed jets to slip through the sound barrier into supersonic flight. Now, 18 years later, Whitcomb has done it again. He has de veloped a radically new wing that will allow subsonic jets to fly faster, more smoothly and more efficiently...
...speed of sound, a bell rings and a light flash es to caution him to go no faster. There is good reason for the warning. Beyond that limit, the big ships generate turbulence that causes a drastic loss in efficiency and sometimes dangerous buf feting. Thus, although the sonic barrier is around 660 m.p.h. at the normal jet cruising altitude of 35,000 ft., commercial jets are held down to a speed of about 560 m.p.h...
...that "tachyon" (a name that Feinberg coined from the Greek word for "swift") should have other strange characteristics. Unlike familiar particles, which gam mass and energy as they accelerate toward the speed of light, Femberg's particle would lose mass and energy as it accelerated beyond the light barrier. At infinite speeds, it would theoretically have no mass or energy at all. Like a plane going faster than the speed of sound, a tachyon with an electrical charge would generate a "light boom" as it traveled faster than 186,000 m.p.s. The boom would take the form of visible...
...tachyons are some day found-and somehow harnessed-Feinberg's dreamed-of trip to the distant stars may yet be possible. The Einstein barrier to higher speeds would still be unbreakable by man and his spacecraft, but with their unbelievable speeds, the particles could serve to accelerate men closer to the velocity of light...
...Moscow in 1918) and its cosmopolitan, cultural effervescence, which stirred not only Adolf Hitler's ire but the enduring suspicions of a xenophobic Georgian peasant, Joseph Stalin. The Paris of the Baltic, the city of Pushkin and Dostoevsky, Leningrad stood, in Salisbury's words, as "the invisible barrier between the end of Russia and the beginning of Europe." It was a prime military and propaganda target for Hitler's surging armies when, in June 1941, the Germans suddenly loosed Operation Barbarossa against their erstwhile Russian allies...