Model for demonstrating the dependability of pendulum's frequency from its length. It presents basic information about the broadening of waves.
Consists of a wide-angle mirror, 2 pieces of a UV lamp, holder clamp, echelon lifting mechanism, and 10 balls. The identic balls are draped lengthways horizontal axis by stranded wire of various lengths. The movement of the balls is ensured by a mechanical arm. There is a mirror by the side that shows a projection of the moving of arrangement alongside a horizontal axis.
Start move the balls simultaneously by the mechanical arm and observe the figures of the creating waves. The bobs make a very captivating wave-like parade that shows all the possible phase relationships before returning to unison and starting over again.