[1]https://phys.org/news/2020-10-nucleus-thorium-scientists-closer-nucl
   ear.html?utm_source=nwletter&utm_medium=email&utm_campaign=daily-nwlett
   er
   This is NOT going to be just another "atomic clock".  It will be a
   NUCLEAR clock!   Based on the thorium nucleus.
   Much more accurate!
              Jim Bell

References

   1. https://phys.org/news/2020-10-nucleus-thorium-scientists-closer-nuclear.html?utm_source=nwletter&utm_medium=email&utm_campaign=daily-nwletter