On 16 June 2012 08:22, Peter Blodow <p.blo...@dreki.de> wrote: > To express angular momentum, we have to multiply force by the length of > the lever, i.e. one meter. So we arrive at the unit DNm = 10 Nm ^= 1 > kpm, and the world is in almost perfect order again.
There is a similar situation with the engine controllers I work on, where there is a tendency to use heck Pascals (hPa) which are coincidentally almost exactly the same as millibars. I do think that this is purely a happy coincidence, as the Pascal depends purely on the definitions of the kilogram and meter, with no reference to atmospheric constants. I think that the kg to Newton correspondence (9.81) might be less accidental, being vaguely linked to the original definition of the meter as the length of a "seconds pendulum" -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
