A practical illustration of static electricity #physics

Japan uses piezoelectric ceramic tiles to convert electricity into electrical energy. These tiles capture the kinetic energy from your footsteps. When you walk, your weight and movements put pressure on the tiles. The ceramic tile bends slightly, resulting in mechanical stress. The piezoelectric material inside the ceramic tile converts this stress into electrical energy. Each step produces a small amount of electric charge, and millions of steps combined can produce enough electricity to drive

How a Lemon Battery Generates Electricity – Simple Science Experiment