Word: field
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Dates: during 1940-1949
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...wants immediate public field trials to test the various systems. CBS declares that it is "perfectly willing to compete with any color TV system any place, any time." But it insists that "a system [its own] can be picked now on the basis of its known performance." Extensive trials, argues CBS, are unnecessary and would be costly and confusing...
...Field Marshal Montgomery (Tues. 9:30 p.m., Mutual). Subject: "Western Union...
...generally supposed to have a magnetic field more powerful than that of the earth. The scientific reasoning: the lines in the sun's spectrum seem to show the "Zeeman effect," splitting in two like the lines in a laboratory light source affected by magnetism. But Dr. Martin A. Pomerantz of the Bartol Foundation had long doubted the sun's magnetic field. Last summer he set out to disprove the theory by the apparently far-fetched method of catching cosmic rays with sounding balloons near the earth's north magnetic pole...
When a cosmic ray (an electrically charged particle from outer space) approaches the earth, it is deflected by the earth's magnetic field. If it is speeding fast enough, it slams through this interference and plunges into the atmosphere. The most powerful particles, whose speed gives them an energy of 14 billion electron-volts, can reach the earth at the equator, where the magnetism is strongest. At the latitude of Philadelphia, two billion volts is enough...
...Pomerantz figured that near the north magnetic pole in northeastern Canada the earth's magnetic field is so feeble that even the most sluggish rays should make the grade. He also reasoned that if he could find rays so feeble that they could not theoretically get through the supposed magnetic field of the sun, he would have proved that such a field does not exist...