Surface Energy Density and Surface Tension

Thus it is clear that the surface of the

liquid must have a higher energy than

Sometimes the unit is given equivalently Thus γ = f / L as Nm-1, particularly when quoted as a surface tension. The surface energy density is: (f dx) / (L dx) = f/L = γ , i.e.

Sometimes the unit is given equivalently Thus γ = f / L

as Nm-1, particularly when quoted as a surface tension. The surface energy density is: (f dx) / (L dx) = f/L = γ , i.e.

We can use a virtual work argument to show this for a force f acting on an area dA and moving through a distance dx: L f

We can use a virtual work argument to show this for a force f acting on an area dA and moving through a distance dx:

L f

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Surface Energy