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10.29.07
Watermelon Thumping
High School Students Use Soundwaves to Test for Sweetness Everyone has thumped a watermelon at some time in their life. Old timers will tell you that a ripe one makes a deep thud, while others may tell you to listen for a resonating ping. As part o
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10.15.07
Constructing an Infrasound Detector
High School Science Teacher Reports From the Island of Maio Some 300 miles off the West Coast of Senegal lies a very small, dusty island named Maio. It is here that Professor Michael Hedlin of the University of California at San Diego built an infrasoun







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