We're all familiar with the high-pitched squeak of basketball shoes on the court during games, or tires squealing on pavement. Scientists conducted several experiments and discovered that the geometry of the sneakers' tread patterns determines the squeak's frequency, enabling the team to make rubber blocks set to specific frequencies and slide them across glass surfaces to play Star Wars' "Imperial March."
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今日国内黄金饰品价格对比显示，多数金店金饰价格突破1600元/克，较昨日上涨32元/克左右，最高达1608元/克。（财联社）原文链接下一篇外媒：OpenAI获1100亿美元融资，英伟达投资300亿美元据美国消费者新闻与商业频道(CNBC)报道，OpenAI周五宣布了一轮1100亿美元的融资，这一融资规模是其一年前上一轮融资的两倍多，创下私营科技公司的纪录。