Collimation aligns a telescope's parts for the sharpest images. Most telescopes need collimation at some point; reflectors need it often. Tools like laser collimators or Chashires help align the ...
Debin Zhang, Xingchun Zheng, Yifan Hu, Zhenlei Lyu, Yaqiang Liu, and Tianyu Ma, Tsinghua University, Beijing, Beijing, China; Zuo-Xiang He, Beijing Tsinghua Changgung ...
In analogy with the electromagnetic case, the main actors necessary for the appearance of both enhanced transmission and collimation in acoustics are the acoustic surface waves (ASWs). There are many ...
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