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Brass Ring and Ball for Thermal Expansion Demonstration Biology this metal helix lets stairwell scale this metal helix lets stairwell scale wave propagation experiments amplify the visibility of standing waves 4 inches with thread fitted joints tuning pressure by screw Built for the classic thermal expansion demonstration this brass ball and ring fit freely at room temperature and stick tight once the ball is heated and expanded
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Brass Ring and Ball for Thermal Expansion Demonstration Biology this metal helix lets stairwell-scale

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