Ring And Ball Apparatus

About Ring And Ball Apparatus

The Ring and Ball Apparatus is a fundamental physics laboratory instrument used to demonstrate the principle of thermal expansion of solids. It is widely used in schools, colleges, and research laboratories for educational and experimental purposes.

This apparatus consists of a precisely machined brass ball and matching brass ring, mounted on insulated handles. At room temperature, the ball passes easily through the ring. When the ball is heated, it expands and no longer fits through the ring, clearly illustrating the effect of heat on the dimensions of solids.

Key Features

• Made from high-quality brass for durability and long service life
• Smooth finish for accurate demonstration
• Wooden or insulated handles for safe handling during heating
• Compact and easy-to-use design
• Ideal for classroom demonstrations and laboratory experiments

Specifications

• Material: Brass (ball and ring)
• Ball Diameter: Approx. 1822 mm
• Mounting: Handle-mounted or chain-supported
• Application: Physics lab / thermal expansion demonstration

Applications

• Demonstration of thermal expansion and contraction
• Physics experiments in schools and colleges
• Educational science kits and laboratory use

Working Principle

When heated, metals expand due to increased molecular motion. In this apparatus, the heated ball expands and cannot pass through the ring, whereas it fits perfectly when cooleddemonstrating the concept of expansion clearly and effectively.