Ball & Ring Apparatus Brass Manufacturer,Supplier and Exporter in India
Product Code : EL-PS-10590
Quick Answer: The Ball & Ring Apparatus consists of two brass rods with wooden insulated handles. One rod has a ring and the other has a ball of approximate diameter 25 mm. The ball passes through the ring at room temperature but not when it is heated.
Last updated: October 2026
Key Features
- Two brass rods with insulated wooden handles
- One rod has a ring at the end
- The other rod has a ball of approximate diameter 25 mm
- The ball passes through the ring when both are at room temperature
- A heated ball expands and cannot pass through the ring
Technical Specifications
| Specification | Value |
|---|---|
| Rods | Two, brass |
| Handles | Insulated, wooden |
| Ball | Approx. 25 mm diameter, brass |
| Ring | On the end of one rod |
About This Product
The ball and ring is a classic demonstration of thermal expansion in solids. Pupils first pass the ball through the ring to show it fits when both are at room temperature. The ball is then heated, and it expands so that it can no longer pass through. When the ball cools it fits again. The insulated handles let the rods be held while the ball is hot, and the demonstration makes the idea of expansion easy for a class to see.
Frequently Asked Questions
Q1. How big is the ball on the Ball & Ring Apparatus?
The ball has an approximate diameter of 25 mm.
Q2. What does the apparatus demonstrate?
The brass ball passes through the ring at room temperature, but when the ball is heated it expands and cannot pass through.
Related: Physical Sciences, Newton Meter digital, Maxwell's Wheel.
For a quotation on the Ball & Ring Apparatus Brass, contact School Lab Equipment India.