Cistern Flow: The Depth of Inlet and Outlet Below the Surface
How the relative depth of the two falls decides which flow prevails
This mirror-written red-chalk page continues the analysis of a cistern's inflow and outflow. Leonardo argues that if the inlet's fall lies farther below the surface than the outlet's, then even with vents of equal bore the inflow exceeds the outflow until the two powers equalize. He adds that if in such a case the outlet runs longer below its surface than the inlet, the outflow will instead prevail.
On this page
Depth below the surface governs inflow and outflow
If the inlet's fall is farther below the surface than the outlet's, then even with equal bore the inflow is greater than the outflow until the power equalizes. If instead the outlet then runs longer below its surface than the inlet, the outflow becomes the greater.