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The first nuclear clock will test if fundamental constants change
An ultra-precise measurement of a transition in the hearts of thorium atoms gives physicists a tool to probe the forces that bind the universe.
A team in the lab of Jun Ye (top), led by graduate student Chuankun Zhang (bottom), published an ultra-precise measurement of the nuclear clock transition in the journal Nature. A team in the lab of Jun Ye (left), led by graduate student Chuankun Zhang (right), published an ultra-precise measurement of the nuclear clock transition in the journal Nature. Theoretical ideas like string theory that try to build a deeper, more complete understanding of where forces come from often predict that these numbers, even the speed of light, change ever so slightly over time.
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