Scientists have taken another giant step towards building the most precise clock ever imagined—one that could display not only the passage of time, but shifting rules of nature itself. An ...

Add Yahoo as a preferred source to see more of our stories on Google. Denver, Colorado | Physicists are getting closer to creating a long-sought ‘nuclear clock’. This device would keep time by ...

A team of researchers in Austria has recently demonstrated that the world’s first nuclear clock could help answer whether the fine-structure constant changes over time. The scientists from the Vienna ...

A string of experiments using thorium-229 nuclei has brought the long-theorized nuclear clock closer to reality, producing frequency measurements stable enough to challenge the atomic clocks that ...

The emission of photons by excited nuclei has been explored for timekeeping and sensing, but nuclear processes that eject electrons offer practical advantages. Electrons in atoms can exist only in ...

Researchers are looking for new ways to improve timekeeping because even small gains in stability can help physicists discover subtle physical effects. The thorium-229 nuclear clock is a newer venture ...

Nuclear effect The deformed shape of the ytterbium-173 nucleus (right) makes it possible to excite the clock transition with a relatively low-power laser. The same transition is forbidden (left) if ...

To mark the release of the IAEA report Coal to Nuclear: Supporting a Clean Energy Transition — developed for South Africa’s 2025 G20 Presidency — the IAEA is hosting a webinar on the potential of ...

Add Yahoo as a preferred source to see more of our stories on Google. The thorium crystal. The core element of the experiment: a crystal containing thorium atoms. (CREDIT: TU Wien) Scientists have ...