A glass plate is coated so that water meets it with contact angle (hydrophobic)
PHYSICS · Subjective · Fermi University Physics · Fluids & Continuum Physics · Fluid statics and the continuum picture · Fluid statics and the continuum picture
Fluid Dynamics, Ch Interfaces: capillary statics and the stress conditions at a surface
Problem
A glass plate is coated so that water meets it with contact angle θc=100∘ (hydrophobic). State whether the water surface next to the plate lies above or below the flat level far from the plate, and estimate the size of the effect using the capillary length ℓc=2.7mm for water.