When you touch the ball with your hand, the distribution of electric fields and electric fields around the ball is no longer homogeneous and symmetrical, so the light is warped and twisted around your finger and dances as you move your finger.
The plasma ball light also has a sound sensing function, which can change the light beam according to the music level of the sound or music. It is ideal for bars, nightclubs etc. and can bring unexpected mystical effects.Of course, it's also a good gift for your friends.