Ring and Ball Apparatus

  •  The Ring and Ball Apparatus is a helpful tool for demonstrating thermal expansion.
  • It consists of a brass ball connected to a brass ring with a chain, mounted on a rod with a wooden handle.
  • When the ball is cold, it can easily pass through the ring.
  • However, when heated, its diameter of 19mm makes it too large to fit through the ring.

180 (Exc. GST)

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  • Pick up from the Samtech Store in Ambala

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  • Courier delivery

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  • Warranty 1 year
  • Free 7-Day Replacement


The Ring and Ball Apparatus is a fascinating piece of equipment that has been around for centuries. Its inventor, Guillaume Amontons, was a renowned French physicist who made many significant contributions to the field of physics. The apparatus is used to demonstrate the thermal expansion of solids, a crucial concept in various industries, including engineering and material science.

The device consists of a metal ring with a small ball inside. When the ring and ball are heated, the ball expands, causing it to rise in the call due to thermal expansion. This simple yet effective demonstration has been used in physics classrooms worldwide for many years to teach students about thermal expansion and its applications.

One of the most significant benefits of the ring and ball apparatus is that it provides a tangible way for students to understand the concept of thermal expansion. By seeing the ball rise in the ring, students can quickly grasp that when materials are heated, they expand. This understanding is crucial in many industries, where thermal expansion is a common phenomenon that engineers and scientists must account for when designing products and structures.

Overall, the Ring & Ball Apparatus is a valuable tool for teaching students about thermal expansion. It is a testament to the ingenuity of Guillaume Amontons, who created the device over 300 years ago and whose legacy continues to inspire students and scientists alike.