fischer m speed racquet technology
The Magnetic Speed System from Fischer - chosen by time Magazine as the "most amazing invention" - gives the racket outstanding acceleration thanks to the repulsive power of unipolar magnets.
When the ball hits the strings, the racquet frame is naturally deformed, as both sides move together. As the equally polarised magnets move the sides to their original position more quickly, the returning power is accelerated and the ball is catapulted off the strings more powerfully. Two magnets – but no gravity.