I just love it when you are at a play or movie theater and they make the announcement, "Please silence your cell phones..."
Why do they have to announce that?
I mean how many people are carrying around a landline phone?
Harvey FletcherDied 23 Jul 1981 at age 96 (born 11 Sep 1884).American acoustical engineer who was the first to demonstrate stereophonic sound (1934). He was a trail blazing investigator of the nature of speech and hearing, noted for his contributions in acoustics, electrical engineering, speech, medicine, music, atomic physics, sound pictures, and education. He guided the development of the Western Electric Hearing Aid, the first such device to use vacuum tubes. He developed a group survey method using recorded sound of decreasing volume which has wide acceptance in schools throughout the nation. |
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