2B40.85 - Granular Segregation - Rising Stones

Code Number:
Demo Title:
Granular Segregation - Rising Stones
Granular Mixing and Segregation
Area of Study:
Heat & Fluids
Centrifuge Bottle with Salt or Fine Sand, Steel Nut, and Plastic Stick Pins.

Lay one of the containers on its side.  As you shake the container from side to side the nut will sink to the bottom and the light weight pin will come to the top.  The upright container can be shaken in an up and down manner.  The light pin will sink to the bottom and the steel nut will float to the top.

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Disclaimer: These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist.  The University of Iowa is not responsible for demonstrations performed by those using their own equipment or who choose to use this reference material for their own purpose.  The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources.  Performing all or any portion of any of these demonstrations, with or without revisions not depicted here entails inherent risks.  These risks include, without limitation, bodily injury (and possibly death), including risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition; and property loss or damage.  Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.