Two independent research teams have achieved a longstanding goal in physics: building a working nuclear clock. The devices, ...

First dreamed up decades ago, the world's first nuclear clocks are set to improve quickly, becoming more precise and aiding ...

But physicists have long dreamt of even better clocks that run on atomic nuclei, which are less sensitive to environmental ...

A clock based on radioactive thorium atoms realises a long-held ambition, demonstrating a technology that could eventually ...

Time feels familiar. It marks every moment of daily life, from the ticking of a wall clock to the changing numbers on a ...

No matter the item on my list of childhood occupational dreams, one constant ran throughout: I saw myself using an old-fashioned punch clock with the longish time cards and everything. I now realize ...