This way, engineers can figure out where the water needs to flow below ground in tunnels, on the surface in covered trenches or in pressurized pipes, or above ground on walls or arcades.

electric current to water flow, and resistance to changes in pipe volume. Of course, you probably figured out that analogy doesn’t — ahem — hold water to some level of detail, but just how f ...

In addition, as the video points out, fluid flow in a pipe is very similar to electrical current flowing through wires. The discussion about friction loss coves some math, but we were surprised ...