Word: detectors
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Dates: during 1930-1939
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...preview in Chicago, 27-year-old Inventor Leonarde Keeler tried out on two members of the audience his "Lie-Detector" which police have found handy for questioning recalcitrant suspects. The '"Lie-Detector" is a device which, by means of arm and chest bands, records on a paper chart changes in blood pressure and pulse action, presumably resulting from emotion. At last week's test, it worked so well when attached to two De Paul University students that Inventor Keeler said: "The results are . . . even more pronounced than in many cases in which suspects are being questioned in connection...
...Dayton Clarence Miller, had made 175,000 more readings of his interferometer at Case School of Applied Science, Cleveland. His results showed a definite ether drift, which he will expound in April at the meeting of the National Academy of Sciences. In Germany, the other ether detector. Dr. Georg Joos, professor of theoretical physics at Jena University, reported that he had obtained a negative result, upheld Dr. Einstein...
...Detector. By a new X-ray photographic method called amniography, Dr. Thomas Orville Menees of Blodgett Memorial Hospital, Grand Rapids, Mich., has been able to detect the sex of an unborn child three months before birth. An injection of harmless strontium iodide, opaque to X-rays, makes it possible to identify the structure of the unborn child. Another important use of amniography: to determine cases where a Caesarian section is necessary for safe delivery...