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Unring A Bell? Acoustic Engineers Can!

GE unringing Burmese temple bellWho says you can’t un-ring a bell? As a team of acoustical engineers and a biomedical engineering student demonstrate, “destructive interference” can can silence even a huge temple bell – leaving a sleeping baby undisturbed.

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Beat the Motion Sensor

light sensor nano circuitryIn this activity, students in grades 7 to 9 explore material properties as they relate to motion detection, and use that knowledge to make design decisions about what types of motion detectors to use in specific applications, such as conserving energy in commercial buildings.

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