Once we know these heads, we will then subtract the suction head from the discharge head and the amount remaining will be the amount of head that the pump must be able to generate at the rated flow. Here is how it looks in a formula: System head = total discharge head - total suction head. H = hd - hs.
Observation Point. This well used path climbs a short, steep, wooded hillside to a viewpoint of Old Faithful and nearby features, then continues across the hill to Solitary Geyser, a bubbling pool in an open area of the forest.
These instruments are used primarily to measure the elevation or altitude of a celestial object: 1  Back staff, the best known of which is the Davis' quadrant. 2  Cross staff, an older instrument long out of use.  Kamal Very simple instrument used primarily by Arabian navigators.