4 ms·
> chances are at least a few zillion base their unit of time on periods of the radiation corresponding to the transition between the two hyperfine levels of the
by seppel 6y ago
> chances are at least a few zillion base their unit of time on periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom
Of exactly 9192631770 Hz...
- tatersolid 6y agoDo those values depend on the strength of the local gravity well?