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Ball and Ring Apparatus

  • Brass ball secured to mounted brass ring with chain
  • Sphere: 22mm ø
  • Ring: 32mm outside ø
  • Overall length: 210mm
Out of stock

Use the ball and ring apparatus to prove that metals expand when heated. It's a simple, yet effective demonstration. The ball will pass through the ring when cool but not when heated. The apparatus is mounted within a wooden handle to prevent your hand from burning.

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