Ball & Ring Gravesande's - Chain Type Crepe & Tissue Each unit is 40cm deep

Each unit is 40cm deep and 80cm high

child-safe materials with smooth edges

This interactive teapot features 4 mini teacups that fit into matching coloured slots

Durable and aesthetically pleasing

patterning

Ball & Ring Gravesande's - Chain Type Crepe & Tissue Each unit is 40cm deepThe Ball and Ring Gravesande's Apparatus (Chain Type) is a classic physics demonstration tool designed to show the expansion and contraction of metals with heat. At room temperature, the brass ball easily passes through the metal ring. Once the ball is heated, it expands and can no longer pass through the ring, visually demonstrating the principle of thermal expansion. This apparatus includes a brass ball and ring, both mounted on sturdy steel rods