Resonance

I always thought that this is one beautiful concept...

In sound .. Its the prolongation or amplification of sound due to different settings that sum up in two waves of sound having the same frequency and lag ...

In physics ... its the creation of a very strong vibration due to the equality of a system's frequency to that of an external source ...

In electricity ... the absence of resistance to current flow and the system becomes completely reactive .....

In human emotions ... very similar to the above ( notice the words 'absence of resistance', 'reactive', 'frequency equality' ).. its the sharing of an emotional pattern that results in a shared increase in intensity of an emotional state !!!! Sadness, Happiness enthusiasm .. its application to children ... to leadership ...

elegant concept!