Vibrate: quickly move back and forth
Energy: the ability of a physical system to set something in motion
Frequency: the number of times that something occurs in a given period of time.

Energy becomes weaker the more distance increases. So to cover long distances more energy is needed.

Frequencies do not get weaker as distance increases. This is why you can speak of a "reconnective continuum", in which healing and transformation can take place through information and exchange (light and information).