This phenomenon occurs when the frequency of an external force matches the natural frequency of an object, causing the object to vibrate with increasing amplitude.
Here's an example: Imagine pushing a swing. If you push at the same frequency as the swing's natural frequency, the swing will swing higher and higher. This is because the external force (your push) is in resonance with the swing's natural frequency.
Resonance is a powerful phenomenon that can have both positive and negative effects. It is used in musical instruments to amplify sound, but it can also cause bridges to collapse or buildings to shake during earthquakes.
