MISSOULA, Mont. — While up in the mountains, have you ever looked down on a cloud or fog bank below and seen concentric rings of light surrounding your shadow? A viewer recently shared a photo of this ...
A research team led by Prof. XUE Xianghui from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) proposed a wind sensing lidar theory based on ...
One of the simplest and most beautiful naturally occurring patterns can be observed when light is shined through a pair of slightly misaligned periodic structures. This phenomenon, known as the moiré ...
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