Arcsecond
01
角秒, 弧秒
a unit of angular measurement equal to 1/60th of an arcminute, or 1/3,600th of a degree.
例子
The star 's parallax was measured at 0.05 arcseconds, indicating its distance from Earth.
这颗恒星的视差被测量为0.05 角秒，表明它与地球的距离。
High-resolution telescopes can distinguish objects separated by less than one arcsecond.
高分辨率望远镜可以区分相隔不到一 角秒 的物体。
