What is capillarity? Derive an expression for height of liquid in a capillary tube. Also
discuss the situation if the tube is of insufficient height.
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The phenomenon of rise or fall of a liquid in a capillary tube is called capillarity. T=r(h+r3)ρg2cosθ. For capillary r3 can be neglected h=2Tcosθrρg . this is called Ascent formula.Capillarity, rise or depression of a liquid in a small passage such as a tube of small cross-sectional area, like the spaces between the fibres of a towel or the openings in a porous material. ... Capillarity is not limited to the vertical direction.
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