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clocksPhys Org
•85% Informative
Second is defined by electron transitions in cesium atoms, defined by the transition frequency of the atom.
In September , scientists in the US made measurements using the element strontium whose transition frequency is higher than visible light.
In contrast to the atomic clock, the transition occurs in the core of the nucleus, or core, of an atom.
The thorium atom transition has a frequency roughly one million times higher than the cesium atom's.
This means it has been measured with a lower accuracy than the current state-of-the-art strontium clock.
Measuring time to the nineteenth decimal place would allow scientists to study very fast processes.
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