The discovery of acoustic spin

Recently, Chengzhi Shi (now at Georgia Tech), Rongkuo Zhao, Sui Yang, Yuan Wang, and Xiang Zhang from the University of California, Berkeley and Long Yang, Hong Chen, and Jie Ren from Tongji University discover and experimentally observe the existence of acoustic spin in airborne sound waves.
Source: EurekaAlert, https://www.eurekalert.org