What causes resonance?
Consequently, why does resonance occur?
Light waves come from the vibration of charged particles. Objects, charged particles, and mechanical systems usually have a certain frequency at which they tend to vibrate. Resonance occurs when the amplitude of an object's oscillations are increased by the matching vibrations of another object.
Similarly, you may ask, what is resonance and what conditions cause it?
Resonance is when the frequencies of forced vibrations on an object matches the object's natural frequency, causing a dramatic increase in amplitude. Resonance occurs when when a source other than the resonating device vibrates at the exact resonant sound of the said device.
Resonance occurs when a system is able to store and easily transfer energy between two or more different storage modes (such as kinetic energy and potential energy in the case of a simple pendulum). However, there are some losses from cycle to cycle, called damping.