Fake urine poses law enforcement challenge. People trying to pass off another person's urine has long been an issue for Tippecanoe County, Ind., courts. In recent years, testers are seeing more synthetic urine kits. The (Lafayette, Ind.) Journal & Courier.
Quick Answer. The bathroom of a maritime vessel is known as the head because of its location aboard vessels in the bow or fore of the ship, as explained by the Naval Heritage and History Command. The term first appears in 1708 in Woodes Rogers' book, A Cruising Voyage Around the World.. Continue Reading.
Head is one of the main characterisitics of a pump. In the imperial system it is measured in feet. If the maximum discharge head of a pump is say 10 meter, the fluid will be able to get to 10 m of height above the discharge and the flow will be zero. The head of the pump depends on the flow rate and it is zero at the maximum head and diminishes as the flow increases. To verify the discharge head of a pump, a pressure gauge is used. Pressure gauges measure in units called psi or pounds per square inch. The formula gives the conversion of pressure to head.