Capillary action - Formula

Capillary action or capillarity (also known as capillary motion) is the ability of a narrow tube to draw a liquid upwards against the force of gravity. It occurs when the adhesive intermolecular forces between the liquid and a solid are stronger than the cohesive intermolecular forces within the liquid. The effect causes a concave meniscus to form where the liquid is in contact with a vertical surface. The same eff ...

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• Capillary action - Trivia

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With notes on the dimension in SI units, the height h of a liquid column (m) is given by: ...where: T = surface tension (J/m²) θ = contact angle ρ = density of liquid (kg/m3) g = acceleration due to gravity (m/s²) r = radius of tube (m) For a water-filled glass tube in air at sea level, T = 0.0728 J/m² at 20 °C θ = 20° (0.35 rad) ρ = 1000 kg/m3 g = 9.8 m/s² ...and so the height of the wat ...

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Capillary action, Capillary action - Formula, Capillary action - Trivia

Read more here: » Capillary action: Encyclopedia II - Capillary action - Formula