摘要
What is time? How is time measured? What are atomic time and coordnated time?Where does standard time come from? Now you can find the answers to such questions at the timewebsite (http:// www.time.ac.cn) set up by the CAS National Time Service Center (NTSC). Using thisscience popularization platform, visitors can learn about time-related science ranging from theconcept of time to demonstrations of clock brands. With just a click, they can learn about thehistorical development of the time scale, instruction tips for a radio control clock, the functionof an ancient sundial, the reason we use Daylight Saving Time and related information in this field.