A volcano can casually puff out perfect smoke rings into the sky. There is a simple science behind these rare volcanic vortex rings. Imagine a mighty volcano casually blowing flawless smoke rings into ...
[RISK DISCLAIMER] All opinions, news, analysis, prices or other information contained on this report is provided by analyst of Zhejiang Huarui Information Consulting Co., Ltd (CCFGroup) as general ...
Abstract: In the radio-frequency and microwave domains, waves carrying an orbital angular momentum (OAM, vortex waves) are used to improve the performance of wireless communications systems, where OAM ...