Word: lambda
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Dates: during 1950-1959
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...nonobjective drawing. It was in fact a picture of one of nature's innermost secrets. Made possible by use of California's new 6-ft. liquid hydrogen bubble chamber (TIME, July 13), it showed for the first time the birth, death and after effects of an anti-lambda particle...
...Lambda particles are short-lived packets of matter created when high-energy protons hit protons at rest. Since each particle is presumed to have its "anti" counterpart, scientists have long been looking for anti-lambda. Faint traces of the elusive particle showed last year on photographic plates exposed to the 6 billion-volt Berkeley Bevatron, but the plates were too small to tell much of the anti-lambda story...
...bubble-chamber picture (see cut), an antiproton from the Bevatron enters at bottom and hits a proton (1): out of the collision come one lambda and one anti-lambda particle. Since both are neutral electrically, they leave no tracks in the liquid hydrogen, but after a short, invisible career, each decays into track-leaving particles by which it can be identified. The lambda ( 2) turns into a proton and a negative pi meson, both of which go off the picture leaving strong curved tracks. The anti-lambda (3) turns into an antiproton and a positive pi meson. The positive...
...number had squeezed into one phone booth. Students in South Africa then pushed the number up to 25. Not to be outdone by foreigners, 32 students at Modesto Junior College, California, claimed to have crammed themselves into one booth. And, the following week, the Oklahoma City University chapter of Lambda Chi Alpha managed to jam 33 of its fraternity brothers into one booth before 1500 cheering witnesses...
...following announcement appeared in the Fall, 1953, issue of the bulletin of Phi Lambda Kappa, a medical fraternity...