Word: echoeing
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...left hand the blindfolded subject holds a tiller by which he can swing the sound beam, searching for test objects-small wires, lengths of pipe, pieces of cloth-hung at random from the chamber's roof. When the beam hits a target, an echo comes back, and from the character of that echo an experienced listener can tell an amazing amount about the target...
...Telltale Echoes. The secret is the mix of frequencies in the sound pulses, a formula that Lockheed copied from the porpoises. Small objects such as wires do not reflect the longer sound waves of the lower frequencies. The echoes that they send back are predominantly high-pitched, and a listener quickly learns to judge target size by the tone of the echo. Once he knows the size of an object, he can tell its distance by the loudness of the echo. Judging a target's material is a more subtle job, but in general, such hard materials as metal...
Lockheed's echo-location system may some day have an important impact on antisubmarine warfare, for it shows that the human ear, when working with the proper mixed frequencies, can determine the composition of an unseen object. This could correct a major failing in present sonar systems in which whales are sometimes mistaken for ene my submarines. It may also put the Seeing-Eye dog out of business. Lockheed scientists hope to reduce the sound generator to the size of a flashlight; then the blind may learn to "see" with their skilled ears...
...drama is called Der Stellvertreter, a title that has been translated as The Representative or The Deputy, hut is perhaps best rendered as The Vicar-in echo of the title Vicar of Christ on Earth, which is one of the official designations of Roman Catholic Popes. The first play of Germany's Rolf Hochhuth, 32, it ran for five months last season in West Berlin's Free People's Theater, is now showing in Stockholm, Basel and at London's Royal Shakespeare Theater...
...handed down by the U.S. Supreme Court stirred more controversy than the 1962 and 1963 decisions banning religious observances in public schools. Beyond the questions of constitutional law lay deep emotions, and the court could have foreseen that its opinions would reverberate in public argument, that its decisions would echo through press and pulpit. It was to be expected that the court would strive to make its opinions as airtight as possible, both in law and logic. Instead, the opinions left room for many a doubt and reservation-by clergymen, by parents, and by constitutional lawyers...