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Date: 2009-02-28 06:14 am (UTC)no subject
Date: 2009-02-28 06:23 am (UTC)no subject
Date: 2009-02-28 06:29 am (UTC)no subject
Date: 2009-02-28 04:51 pm (UTC)no subject
Date: 2009-02-28 12:43 pm (UTC)When I teach the sound unit in my physics class, I have the students test the limits of their hearing. I can't hear much beyond 19,400 Hz. The kids who use their ear-buds and head-phones all the time? Have really bad results. It freaks them out for about a week, then the iPods are back.
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Date: 2009-02-28 01:10 pm (UTC)no subject
Date: 2009-02-28 02:41 pm (UTC)no subject
Date: 2009-02-28 05:48 pm (UTC)no subject
Date: 2009-02-28 06:56 pm (UTC)no subject
Date: 2009-02-28 11:28 pm (UTC)no subject
Date: 2009-03-01 07:20 am (UTC)I hear this noise from my mother's air conditioner sometimes. She can't figure out why I hate going in her bedroom.