What is the coefficient of surface tension?

Two molecules at a distance d apart and of masses m1 and m2 attract each other according to the Newtonian law with a force f = G.(m1.m2)d^2. read more

To resist this tendency, a force must be applied which per unit length of the membrane is called the surface tension. For water at 18°C the coefficient of surface tension is ca. 7.10-4 Newtons per square centimeter. read more

Surface tension is the elastic tendency of a fluid surface which makes it acquire the least surface area possible. Surface tension allows insects (e.g. water striders), usually denser than water, to float and stride on a water surface. read more

The coefficient of surface tension of a liquid is the force acting in the surface of the liquid at right angles to a line of unit length in the surface of the liquid. read more