Vibration refers to the rapid back-and-forth movement of an object around a central point. This motion can occur in various forms, such as sound waves produced by musical instruments or the shaking of a phone when receiving a notification. Vibrations can be caused by external forces or internal mechanisms, and they can travel through different materials, including air, water, and solids. In everyday life, we encounter vibrations in many ways. For example, when a car drives over a bumpy road, the suspension system absorbs and dampens the vibrations to provide a smoother ride. Similarly, machines often use vibrations to perform tasks, such as in industrial equipment that sorts or separates materials.