Physicists were more than ever close to creating highly accurate atomic clocks. Until now, these have served as a kind of standard of precision among chronometers.
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However, scientists have found that it is realistic to create a more accurate atomic clock. Actual versions were created not on the basis of a quartz mechanism, but by using electrons in an atomic shell. Although existing nuclear clocks are highly accurate, it is possible to create something more reliable. This option is based on changes within the nuclei of the thorium isotope. The idea appeared for the first time in 2003, but at that time it turned out to be problematic to implement it.
The technology, which is based on changes inside thorium-229 nuclei, will allow reaching a new level of precision in the study of fundamental physics. This will turn out to be useful, including in the search for dark matter.