First working prototypes of a nuclear clock
Scientists have crossed an important threshold in nuclear clocks. Research teams in Vienna and Beijing have developed the first working prototypes that use the atomic nucleus to measure time.
Why it matters
Today's atomic clocks are based on electron transitions in atoms. Nuclear clocks aim to use transitions in the atomic nucleus instead; because these transitions are less sensitive to environmental effects, they carry the potential for far more precise timekeeping.
A 50-year goal
This approach has been discussed in theory for decades. Working prototypes from two independent teams show the goal is no longer only on paper.
What could change
More precise timekeeping could have long-term effects in areas such as positioning, fundamental physics tests and communication infrastructure. Still, the technology has a long way to go before everyday use.
