The latest atomic clocks are so staggeringly precise that they are going to redefine the second. The only question now is when
Source:
https://www.newscientist.com/article/mg24732960-900-inside-the-incredibly-slow-race-to-reinvent-time/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home