Wolfram|Alpha

Computing...

Input interpretation:

convert 5\/(3.8 GHz  (gigahertz)) to milliseconds


Result:

1.32×10^-6 ms  (milliseconds)


Comparison as period:

 ~~ 12 × period of one transition between the two hyperfine levels of the ground state of a cesium-133 atom ( 1.088×10^-10 s )