Word: stevenson
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Dates: during 1930-1939
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Putting salt on the tail of a cosmic corpuscle which can penetrate 10 centimeters of lead is no mean feat, but Jabez C. Street, assistant professor of Physics, and Edward C. Stevenson, instructor in Physics, have succeeded in doing just that, according to announcements from Jefferson Research Laboratory...
...tiny speeks of matter which participate in the phenomena of nuclear physics, and the last few years have seen a frantic scientific big-game hunt which has successively laid low electrons, protons, positrons, photons, neutrons, alpha and gamma particles. After approximately three years of research, physicists Street and Stevenson have definitely decided that yet another particle should be added to the list. They haven't named it yet, feeling that they should become a little better acquainted with their research-child before they give it an identity...
What got observers Street and Stevenson to thinking that a new sort of corpuscle was in the offing was that the behavior of the cosmic ray particles was not at all like the accepted manner of an electron, which characteristically forms high energy photons, which in turn form more electrons to produce the phenomena known as "electron showers." Due to these showers electrons soon lose their energy, and consequently haven't enough "push" to make much progress through lead. These newly-discovered specks, however, pass through ten centimeters of the metal almost undeviated, with little appreciable loss of energy...
Curiously enough, Neddermeyer and Anderson of the California Institute of Technology have arrived at the same results as Street and Stevenson, working independently but along somewhat parallel lines. Their results are to be published in an early number of the American Physical Review...
There is still plenty to be learned about all these forces, but that did not prevent Drs. Jabez Curry Street & Edward Carl Stevenson of Harvard from announcing last week that they had discovered a brand-new cosmic particle which the heavens rain upon the earth. It has a negative electrical charge like an electron, but seems to weigh ten times as much and have a thousand times as much energy, easily passing through four Geiger counters, two cloud chambers and seven inches of lead...