PIRA: 1M40.00

Equipment List

  • Euler's disk and mirrored base


  1. Hold the disk almost upright near the middle of the mirrored base. Spin it so that the smooth side rocks on the mirror and the bright speckled side faced upward. As the disk spins down it provides a light and sound show all in one. Notice how it ‘speeds up’ as it gets closer to its rest position