AI Insight
Scientists have developed the first functional nuclear clocks, which measure time by tracking energy fluctuations in atomic nuclei rather than electron transitions used in conventional atomic clocks. This represents a fundamental shift in timekeeping technology, as nuclear transitions are less susceptible to external interference than electron-based transitions. These devices could potentially offer even greater precision than current atomic clocks, which define the international standard for measuring seconds.
Why it matters
Nuclear clocks could enable more precise measurements for fundamental physics experiments, improved navigation systems, and better detection of gravitational waves. The enhanced stability against environmental disturbances may also allow scientists to test whether fundamental constants of nature actually change over time.
Understand the Science
These radical new devices keep time using fluctuations in the energy states of an atom’s nucleus, rather than those of its electrons, which atomic clocks currently use to define the length of a second