Surface Tension, Capillarity & Vapor Pressure

Inside this lesson

Define surface tension σ and explain its molecular origin
Use the capillary-rise formula h = 4σ cosθ/(ρgd) for a circular tube
Distinguish wetting (rise, concave meniscus) from non-wetting (depression, convex meniscus)
Define vapor pressure and explain how its violation leads to cavitation

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Interactive simulators for the Moody chart, Bernoulli's equation, hydrostatic forces, and more.

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Educational content covering topics typical of a first- and second-year mechanical engineering curriculum. Not a substitute for accredited coursework, and not suitable for real fluid-system design without review by a licensed professional engineer.