On Wed, Feb 24, 2016 at 03:58:41PM -0800, Linus Torvalds wrote: > On Feb 24, 2016 15:43, "Dirk Hohndel" <[email protected]> wrote: > > > > But this bothers me. from 60 to 80 to 100 bar the z_factor goes UP! > > That just seems wrong. Maybe there's something in the physics that I don't > > get that makes this a magic range, but still... this at least needs an > > explanation. > > I have no idea of what the physical explanation is, but if you look at the > compressibility graphs it turns out to not even be hugely unusual. To use a > highly technical term, they are some "funky shit". > > Richard pointed to another table (on baue.org) of compressibility values > that had other gasses, and that had oxygen with even more of a dip (it's at > 5% smaller volume than you'd expect at just 1300psi). So it compresses > *better* than you'd expect, more so than pure air. > > I may be misusing and misunderstanding the Z factor, but yeah, I found it > surprising too.
OK, so I'll take the patch as is and wait for Robert to curse me - or send a different patch :-) /D _______________________________________________ subsurface mailing list [email protected] http://lists.subsurface-divelog.org/cgi-bin/mailman/listinfo/subsurface
