Rapid contact sound sensitive 200mm 8in plasma ball rapid a185 p add a spark to your lighting quite literally with this 200mm 8in plasma ball p p the ball produces the image of an electric lightning charge with exciting colourful visual effects the ball responds to touch as the lightning stream follows your movement as the magnetic field is charged p p alternatively the ball can respond to sound creating a light show in time with your music p contact sensitive 8 inch plas