In physics, resonance is a phenomenon in which a VIBRATING system or external force drives another system to oscillate with GREATER amplitude at a limited range of frequencies.


example is like

best models of resonance in a musical instrument is a resonance tube (a hollow cylindrical tube) partially filled with water and forced into VIBRATION by a tuning fork. The tuning fork is the OBJECT that forced the air inside of the resonance tube into resonance. As the tines of the tuning fork vibrate at their own natural frequency, they created sound waves that impinge upon the opening of the resonance tube. These impinging sound waves produced by the tuning fork force air inside of the resonance tube to vibrate at the same frequency. Yet, in the absence of resonance, the sound of these vibrations is not loud enough to discern. Resonance only occurs when the first object is vibrating at the natural frequency of the second object. So if the frequency at which the tuning fork vibrates is not identical to one of the natural frequencies of the air column inside the resonance tube, resonance will not occur and the two objects will not sound out together with a loud sound. But the location of the water level can be altered by raising and LOWERING a reservoir of water, thus decreasing or increasing the length of the air column.