PHY-HEAT-19.1 CONVECTION TUBE
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This is a glass tube that is bent into a square shape with a funnel-shaped opening on one side. The tube is filled with water and a pinch of potassium permanganate or a drop of food coloring is added to the opening. The tube is then heated in the corner and, as the heat is transferred from the glass to the water, the water starts to expand and rise. This pushes the dye around the tube, demonstrating the nature of a convection current Comprises a rectangular borosilicate glass tube of about 20mm outer diameter Tube: 380x300mm