Mechanical Properties of Fluids — Physics STD 12 Science — Question

(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 in a 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.