NEW YORK (AP) — The distinct squeaking sound of basketball shoes on hardwood floors captured the attention of Adel Djellouli while he observed a Boston Celtics game at TD Garden. As a materials ...
The pulses travel along the sole, a bit like how a tablecloth can be snapped into place by sending a wrinkle of motion across it. But in the shoe, the pulses repeat about 4,800 times a second, ...
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