Researchers have engineered a laser device smaller than a penny that they say could power everything from the LiDAR systems used in self-driving vehicles to gravitational wave detection, one of the ...

罗切斯特大学和加州大学圣巴巴拉分校的研究人员设计出一种小于硬币的激光设备，他们表示，该设备可以为从自动驾驶汽车中使用的激光雷达（LiDAR）系统到引力波探测等各种应用提供动力。引力波探测是现有最精密的实验之一，旨在观察和理解我们的宇宙。

Researchers have found that a common and inexpensive material—iron powder—can clean up dangerous “forever chemicals” from ...