The Korea Research Institute of Standards and Science said Wednesday that it has developed an atomic clock that the agency claims is ten times more accurate than the current cesium atomic clock.

The cesium atomic clock defines one second as the duration of about nine-point-one billion resonance frequency cycles of the cesium atom, and has been used as the international standard since 1967.

The state-run institute said the new atomic clock achieved greater accuracy by using a technology to control ten factors that affect the cesium atom's resonance frequency.