SeisMac turns your Sudden Motion Sensor-equipped laptop into an educational three-axis seismograph. It shows a scrolling chart of the three axes of acceleration, reading up to five hundred samples per second.
Price: $0, Rating: 10, Downloads: 22
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ToneTester tests your ears for differences in how they hear pitches ("binaural diplacusis" or "interaural pitch difference"). You adjust a slider until your ears hear the same pitch, and then ToneTester tells you the actual pitch difference.
Price: $0, Rating: 10, Downloads: 20
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