High-speed imaging reveals that the squeak of soft–rigid frictional interfaces, like sneakers sliding on a basketball court, arises from intersonic opening slip pulses—analogous to earthquake ruptures—that thin ridges on the rubber confine to repeat at a musical frequency.
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“My belief [is] that coming out with a fresh mind, first principles, is important. That’s why young people are particularly helpful in tech, because they’re less biased,” Amper recently told Fortune. “I think too much knowledge is actually bad in tech: You’re biased.”
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