The tops of this set are unique in their property. They show various patterns and colours as you spin them in fluoscent source of light. So try if! Spin the tops in front of illuminated tube and enjoy the fun! See the spinning tops through slit and notice the change in patterns and direction of rotations. Understand the principle of stroboscope. Also see the strobo- scopic effects. Spin the tops in front of television and other sources of light. Observe mixing of colours using seven coloured Newton's disc.
ILLUSION OPTICAL TOPS