Global atomic clocks race to redefine the second

Global timekeepers are moving closer to redefining the second using advanced atomic clocks.

Scientists and timekeepers worldwide are preparing to alter how the second is measured. After decades of relying on traditional methods, researchers are evaluating competing atomic clocks to set a new global standard for timekeeping. This shift aims to improve precision across modern technology and scientific applications.

• The backgroundTraditional atomic clocks have maintained global timekeeping standards for over half a century by inserting leap seconds.
• The competitionMultiple advanced atomic clocks are currently vying to establish the next official standard for time measurement.