Sahrye and Zonah have been itching to try out our new U-tube manometer - or more appropriately, womanometer. This is the device that a few lucky folks may remember from their school science labs, which measures pressure directly in fluid-inches, as the difference in height between the fluid levels in the two sides of the U-shaped tube. In our case, we have chosen water, with red food coloring added. We simultaneously measure psi with our usual computer-based pressure sensor, and are aware that one psi = 27.68 inches of water. Our device has a capacity of 98 inches of water, or 3.5 psi.

Sahrye and Zonah have been itching to try out our new U-tube manometer - or more appropriately, womanometer. This is the device that a few lucky folks may remember from their school science labs, which measures pressure directly in fluid-inches, as the difference in height between the fluid levels in the two sides of the U-shaped tube. In our case, we have chosen water, with red food coloring added. We simultaneously measure psi with our usual computer-based pressure sensor, and are aware that one psi = 27.68 inches of water. Our device has a capacity of 98 inches of water, or 3.5 psi.

Knowing these two, both of whom have developed at least 4.0psi in other experiments, there is a good chance that at least one of them will re-locate some of the water from the tube to the floor. Zonah is up first, with Sahrye operating the computer and watching the level. Zonah delivers several mighty puffs, pushing the device very close to its limit. She then turns the hose over to Sahrye, who manages to make it "spurt" on her second attempt. Zonah then has to set up the ladder - in her heels - and top off the fluid. After a few more tries, they declare victory.