2B40.85 - Granular Segregation - Rising Stones

Code Number:
2B40.85
Demo Title:
Granular Segregation - Rising Stones
Condition:
Excellent
Principle:
Granular Mixing and Segregation
Area of Study:
Heat & Fluids
Equipment:
Centrifuge Bottle with Salt or Fine Sand, Steel Nut, and Plastic Stick Pins.
Procedure:

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.

References:
  • Martin Gardner, "The Rising Marble", TPT, Vol. 32, #6, Sept. 1994, p. 381.
  • David Miller Raybin, "The Stones of Spring and Summer", TPT, Vol. 28, #7, Oct. 1990, p. 500. 
  • Rolf G. Winter, "On the Difference Between Fluids and Dried Beans", TPT, Vol. 28, #2, Feb. 1990, p. 104.
  • Robert B. Prigo, "Liquid Beans", TPT, Vol. 26, #2, Feb. 1988, p. 101.
  • Paul Hewitt, "Figuring Physics", TPT, Vol. 25, #6, Sept. 1987, p. 398.
  • Paul B. Umbanhowar and Daniel I. Goldman, "Low Density Fragile States in Cohesive Powders", AJP, Vol. 74, #8, Aug. 2006, p. 720.
  • James Kakalios, "Resource Letter GP-1: Granular Physics or Nonlinear Dynamics in a Sandbox", AJP, Vol. 73, #1, Jan. 2005, p. 8.
  • George Spagna, "Buoyant Force Analog: A Demonstration for the Vertical Stage Overhead Projector", AJP, Vol. 49, #5, May 1981, p. 507.
  • Sung Chang, "A Gently Aerated Bed of Glass Beads Sorts Objects by Density", Physics Today, Vol. 69, #4, Apr. 2016, p. 23.
  • Jasna Brujic, "Jammed Particles, From Sandy Beaches to Sunscreens", Physics Today, Vol. 63, #11, Nov. 2010, p. 64.
  • Steve K. Blau, "Stone Cold: Patterned Ground in Alpine and Artic Regions", Physics Today, Vol. 56, #4, Apr. 2003, p. 23.
  • Troy Shinbrot and Fernando J. Muzzio, "Nonequilibrium Patterns in Granular Mixing and Segregation", Physics Today, Vol. 53, #3, Mar. 2000, p. 25.
  • "F-125. Cartesian Diver Analog - Beans",  DICK and RAE Physics Demo Notebook.
  • Martin Gardner, "The Rising Marble", Science Tricks, p. 41.
  • Borislaw Bilash II and David Maiullo, "Balls in Beans", A Demo a Day: A Year of Physics Demonstrations, p. 192.
  • Jearl Walker, "2.109. Avalanche Balloon", The Flying Circus of Physics Ed. 2, p. 130.
  • Jearl Walker, "2.108. Brazil-Nut Effect and Oscillating Powders", The Flying Circus of Physics Ed. 2, p. 129.
  • Janice VanCleave, "19. Less Is More", Engineering For Every Kid: Easy Activities that Make Learning Science Fun, p. 133.
  • Janice VanCleave, "A Rising Ball", Chemistry for Every Kid, p. 16 - 17.

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.