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.

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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

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Specifications

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

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Applications

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

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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.

Accurate and Reliable Softening Point Testing

Designed for laboratory professionals, the Ring and Ball Apparatus ensures precise measurement of the softening point of bituminous materials. Each component-from the corrosion-resistant brass rings to the removable ball guides-supports accuracy and repeatability. The included 600 ml heat-resistant glass beaker and thermometer allow testing within a wide temperature range (up to 110C), accommodating various sample requirements.


Effortless Manual Operation and Setup

This apparatus is straightforward to assemble and does not require an external power supply, making it highly convenient and portable. With its manual control mode, operators gain hands-on control over each stage of the test. The kit comes complete with a user manual, ensuring easy reference during initial setup and regular usage. The robust tabletop design promotes stability and durability during laboratory procedures.


Comprehensive Package for Laboratory Use

Supplied with all necessary accessories-including two steel balls, brass rings, beaker, guide, support frame, and thermometer holder-the Ring and Ball Apparatus offers a comprehensive solution. Its standardized ring and specimen sizes meet laboratory test requirements. The entire assembly weighs approximately 2.5 kg and fits seamlessly into most laboratory environments.