Science: Blinks & Hisses

All that man knows about the outside world he learns through his senses. But these "physical systems" are as imperfect as man-made instruments: they have their failings and foibles, too.

The Deceptive Ear. In the current Journal of the Acoustical Society of America, Dr. James P. Egan of the University of Wisconsin describes what happens when different sounds enter left & right ears. He put headsets on eight "naive subjects" (not aware of the purpose of the experiment). Through one earphone came a recorded voice. Through the other came a sound like the...

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