Equations · equation
Torricelli's Law
Fluid Dynamics · 1643
- Equation
- v = √(2 g h)
- Field
- Fluid Dynamics
- Named After
- Evangelista Torricelli
- Symbols
- v the speed of a jet leaving an opening · g gravitational acceleration · h the height of fluid surface above the opening
- Year
- 1643
Significance
Fluid escapes a hole at the speed a stone would reach falling the same height — Torricelli's 1643 result, a century before Bernoulli explained it as energy conservation. It sets the jet speed of a Pelton wheel from its head, the pour rate through a casting sprue, and how long a tank takes to drain.
Referenced by
equation
machine
skill
Open on the Equations shelf — the interactive card, the filters, and everything alongside it.