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Ball and Ring - Gravesande's - Chainless

Ball and Ring - Gravesande's - Chainless
A$19.80
Code: TCBALLRNC
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Used to demonstrate thermal expansion.
When the ball is at room temperature, it will pass through the ring, but when the ball is gently heated, it will no longer pass through.
Ball size including handle length: 250 x 20mm.
Ring size including handle length: 260 x 38mm.