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RING BALL



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Product Description

An apparatus for demonstrating thermal expansion. Comprising of a  brass ball secured to a mountedbrass ring by a chain. Ring mounted rod withwooden handle. The ball passes through the ring whencold but will not pass through when heated to the  same extant, that shows the "expansion of a hole" effect. Gravesandes Ring and Ball fitted on two separate handles. Ball dia 25mm.

Product Code : 4031

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