Question

For measuring capillarity the diameter of the tube should be _______.​

Answer 1

Answer:

In microfluidics, capillary tubes of 100 µm diameter are currently used; if the liquid is water (γ=72 mN/m), and using the approximate value cos θ~1/2, the capillary rise is of the order of 14 cm, which is quite important at the scale of a