The Q things
Here is a Q-Question for you all. We all use QNH, QFE and what not. (Ok, FE stands for Field Elevation, most likely). What does the Q stand for - anything? Or is there a history of this that has nothing to do with Q? (Just some mathematical symbol whose orgins were forgotten?)
(So far, all I can come up with was "quasi." QNH = Quasi Non Hydrostatic. Does anyone buy that?)