小编的话:听说,在“天宫二号”空间实验室里有一台神秘的钟—超高精度空间冷原子钟。咦?这是一台什么钟?它在“天宫二号”空间实验中扮演着什么角色?又将对我们的生活产生什么影响呢?一切还得从很久很久以前说起……从日晷到冷原子钟在人类文明进步和科学技术发展的历史长河中,人类活动所带来的社会需求与时间测量的精度是密不可分的。很久很久以前,我们的祖先记录时间是利用天体的周期性运动。他 Xiao Bian’s words: I heard that there is a mysterious clock in the “Temple 2” space laboratory - ultra-precision space cold atomic clock. What kind of clock is it? What role does it play in the space experiment of “Temple II” and what effect will it have on our life? All this has to be said from a long, long time ago ... From the sundial To the cold atomic clock In the long history of the progress of human civilization and the development of science and technology, the social needs brought by human activities are inseparably linked with the accuracy of time measurement. Long, long ago, our ancestors recorded the time using the periodic movement of celestial bodies. he