Smaller version Illustration of a conventional atomic fountain clock (left) next to NPL’s miniature atomic fountain clock. (Courtesy: NPL) A miniature version of an atomic fountain clock has been ...

Shreya Joshi is a James C. Gaither junior fellow in the Democracy, Conflict and Governance Program at the Carnegie Endowment for International Peace. She holds a B.A. in history and political science ...

A team of physicists has discovered a surprisingly simple way to build nuclear clocks using tiny amounts of rare thorium. By electroplating thorium onto steel, they achieved the same results as years ...

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