UIUC Physics
Lecture Demonstration




Demo # 497

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Bologna Bottle

ID # 497


The Bologna Bottle has been heated and then the outside has been slowly cooled, rendering it hard enough to drive a nail into wood. The bottle's inside surface, however, has been rapidly cooled, maximizing internal stress. A mineral is used to scratch the inside surface of the bottle, at which, due to the internal stress, the entire bottle shatters.

Picture of Bologna Bottle

Physics Concept:

  • Modern Physics
  • Atomic Physics
  • Molecular Models

The demonstration takes about 1 minute to perform.

Dept. of Physics, Univ. of Illinois at Urbana-Champaign, 1996.