Ring & Ball Apparatus Manufacturer,Supplier and Exporter in India
Product Code : EL-PLE-10268
Quick Answer: The Ring & Ball Apparatus demonstrates the thermal expansion of metal: at the same temperature the ball slips through the ring, but once heated in a flame it no longer fits.
Last updated: October 2026
Key Features
Metal ring and ball for showing thermal expansion.
Ball passes through the ring when both are at the same temperature.
After heating in a flame, the ball will not pass.
Used to teach heat, temperature and thermodynamics.
About This Product
Pupils first pass the cool ball through the ring, then heat the ball in a flame and try again; it no longer goes through, because increased molecular motion has made the metal expand. The demonstration gives a visible start to lessons on heat and temperature. Educational Lab Equipments can supply and export the Ring & Ball Apparatus to Fiji, Niger, Maldives, Antigua and Barbuda and Slovenia.
Frequently Asked Questions
Why does the heated ball not pass through the ring?
Heating increases molecular motion in the metal, so the ball expands and becomes too large for the ring. At equal temperatures the ball passes through easily.
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