Mass dampers are devices used in buildings and structures to reduce vibrations caused by wind, earthquakes, or other forces. They work by using a large mass that moves in opposition to the vibrations, effectively absorbing and dissipating energy. This helps to stabilize the structure and improve safety. One common type of mass damper is the tuned mass damper, which is specifically designed to counteract certain frequencies of vibration. These systems are often found in tall buildings, such as the Taipei 101, where they help maintain comfort and structural integrity during strong winds or seismic events.