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新发现：身为纵波，声波也有自旋
source link: https://tech.sina.com.cn/d/v/2019-06-06/doc-ihvhiews7071620.shtml
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来源：知社学术圈声波是纵波，所以人们普遍认为声波不具备自旋。但是不久前科学家发现，在特定条件下声波自旋存在。从天体到基本粒子，自旋都是一个重要的基本物理量。对于基本粒子，携带半整数自旋的粒子（比如电子）是费米子，遵循泡利不相容原理；携带整数
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