To download the information contained in this database in Microsoft Excel, click on the following links: 2010 State Salary , 2011 State Salary , 2012 State Salary , 2013 State Salary, 2014 State Salary and 2015 State Salary.
atomic clock. an extremely accurate electronic clock regulated by the resonance frequency of atoms or molecules of certain substances, as cesium.
The big difference is that the oscillation in an atomic clock is between the nucleus of an atom and the surrounding electrons. This oscillation is not exactly a parallel to the balance wheel and hairspring of a clockwork watch, but the fact is that both use oscillations to keep track of passing time.