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What is capillary action or capillarity. |
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Answer» (1) A TUBE of narrow bore (i.e. very small diameter) is called a capillary tube. The word capillary is derived from the Latin capillus MEANING hair, capillaris in Latin means LIKE a hair'.(2) If a capillary tube is just partially immersed in a wetting liquid the liquid rises in the capillary tube. This is called capillary RISE. If a capillary tube is just partially immersed ina non-wetting liquid, the liquid falls in the capillary tube. This is called capillary depression. The rise of a wetting liquid and fall of a non-wetting liquid in a capillary tube is called capillarity. |
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