PIRA 4A40.30 - Smash a Rose, Plastic Tube or Rubber Ball in LN2

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Photo Shows the Demonstration Used at U.T. Austin

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Instructions / Notes:

• A ft. long piece of clear plastic tubing, some rubber hand balls and a few rubber bands are placed in a styrofoam tray.
  
• At the start of the demonstration, the instructor should show the pliablity of each object .
  
• When LN2 is added to the tray the objects are given suficient time to freeze.
  
• The rubber band is stretched between the open tongs and will retain its length once frozen.
  
• The hose and the ball take about five minutes to fully harden.
  
• The ball can be thrown to the floor and the tubing smashed with the hammer.
  
• Demo Staff: This demo needs a full dewar of liquid nitrogen.
  

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Last Updated 6/99 - University of Texas at Austin Physics Dept. - All Rights Reserved