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Vienna and Beijing teams build first thorium nuclear clocks

Original: Teams in Vienna and Beijing have built the first thorium nuclear clocks

Research teams in Vienna and Beijing have independently built the first nuclear clocks based on thorium-229, a long-anticipated milestone in precision timekeeping. Unlike atomic clocks that use electron transitions, nuclear clocks tap energy levels inside the atom's nucleus, promising far greater stability. Scientists say such clocks could probe whether fundamental constants of physics change over time and improve navigation and fundamental research.

Why now: The breakthrough is a major scientific first that could transform precision measurement and tests of fundamental physics.

ViennaBeijingthorium-229nuclear clock

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• Teams in Vienna and Beijing have built the first thorium nuclear clocks · gumby · 186

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