Reused tennis balls against earthquakes

Used tennis balls could protect buildings from earthquakes: This shows the experimental feasibility study by Professor Michalis Vassiliou and team, who explored the potential of reusing cement-filled tennis balls as seismic isolators. The D-BAUG researchers tested balls that were able to roll smoothly under vertical loads similar to what isolation systems might experience under one-story houses. Their new isolation method might provide an inexpensive alternative for low-income countries.