Hands On Interactive

Natural History Museum

Mineral Properties Rolling Ball Exhibit
  This exhibit shows various properties of minerals. A metal ball is chased around a track acting to draw the visitor's eye to the particular mineral property being demonstrated.

 

Rolling Ball

Rolling Ball

  

Natural History Museum: Earth Galleries Update (Earth's Treasury)

This exhibit shows the properties of hardness, density, opacity and magnetism in materials. A rolling ball is used to attract and direct the visitor's attention, as to what physical property is currently being demonstrated. The exhibit includes an Archimedes screw and stainless steel tracking for guiding the ball. The demonstrations, lighting effects and the path of the ball, are controlled by a microprocessor.

  


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Last Update 09/11/01