Which is exactly why we should stick with SI and measure pressure in Pa and altitude in meters.
In fact, the practice of measuring pressure and calling it distance would be effectively defining a meter with varying length different from the official meter. Bad, bad, bad! Where's Bill Potts when you need him? On Tuesday 16 December 2003 07:08, Terry Simpson wrote: > >Of Michael Payne > >Mountains are not shown with heights in hPa. > > Pay attention at the back :-) > > The unit 'feet' used to describe cruising aircraft altitude is not the same > as height above mountains. An aircraft described as flying at 30000 'feet' > could crash into Everest at 29000 feet.
