🔒
Pressure — Definition, Units, Absolute vs Gauge
Inside this lesson
- Define pressure as force per unit area and convert between Pa, kPa, bar, atm, and psi
- State Pascal's law and explain why pressure is the same in all directions at a point
- Distinguish absolute, gauge, and vacuum pressure and convert between them
- Explain why gauge pressure can be negative while absolute pressure cannot
Unlock the full Mechanical Engineering bundle
- Every paid lesson across both the Fluid Mechanics and Solid Mechanics courses — one purchase, both courses.
- Interactive simulators for the Moody chart, Bernoulli's equation, hydrostatic forces, and more.
One-time purchase — see options on the next page.
or unlock everything with all-accessNot ready yet? Keep learning for free — start with the hydrostatic equation or what a fluid is.
⚖️
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.