A horizontal glass tube can be connected to a water reservoir through capillary tubes of different diameters. The smaller the diameter of the capillary tube, the higher the water climbs above the level of the reservoir due to the greater hydrostatic pressure. Internal diameters of the capillary tubes: 2.0 mm, 1.5 mm, 1.0 mm and 0.5 mm Height: 165 mm approx.
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