Have you heard that the energy you send out into the world is what you get back? Emotions travel out from the individual like sound waves through the subtle layers of the energetic body and are echoed back by other energetic bodies that are vibrating at a similar frequency. Resonance is the recognition of similar energies.
The concept of resonance describes the ability of one object to affect another object through vibration or frequency. Essentially, resonance occurs through the interaction and quality of different energy fields.