For water waves and sound waves the unit hertz is usually good enough but radio and TV waves have such a high frequency that the kilohertz (\(kHz\)) or even the megahertz (\(MHz\)) are better units.

Deep in the Pacific, humans have tracked a mysterious whale’s call for decades—but no other whale seems to respond. And now, we might be running out of time to find the source.

This relationship is shown by the equation \(f= \frac {1}{T}\) Frequency is measured in Hertz, Hz. Period is measured using the 'timebase' (seconds per division) from the oscilloscope controls.

Installing seismometers would make it possible to observe changes in the moon's shape and position caused by the passing of deci-Hertz GWs. This frequency range fills the gap of GW spectrum ...