- #1

Nikitin

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**Young-Laplace equation in Fluid Mechanics**

EDIT: I meant the Young-Laplace equation, of course, not the Young-Lagrange.. sorry!

Heya!

According to said equation, ΔP*area = γ*circumference, for an interface of spherical fluid-element.

Can I pls get some explanations?

1) Why is tension, or γ, purely a result of chemical forces? Isn't there a pressure parallel to the surface, just like there is a pressure inside the fluid-element? Because if there were, the equation should be ΔP*area + P*area = γ*circumference.

2) Is there a physical explanation for the formula? Why does γ=ΔP*area/circumference?

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