On Fri, 14 Mar 2003 [EMAIL PROTECTED] wrote: > ... SI10-2002 in 3.3.2.5 on page 9 ... > > 3.3.2.5 Mass > The SI unit of mass is the kilogram (kg). This unit, or a multiple > or submultiple formed by attaching an SI prefix to gram (g), is > preferred in all applications.
Bob, I vote no on the part: "attaching an SI prefix to gram (g), is preferred in all applications... > ... the metric ton of 1000 kg or 1 Mg,... OK > "Tonne" is the name for metric ton that is used in many countries. OK > Only the megagram is SI. Garbage, Bob. The megagram is no more SI than the metric ton or tonne is allowed for use with coherent SI Units! > > The committee could not defend the restriction on tonne. > In SI10 page 7 Table 6 - Units in use with SI we see > mass metric ton t t = 1 Mg = 10^3 kg and for good reason. > The sentence "Only the megagram is SI." It is patently not true! brings up the question of what > is an SI unit for a contract that specifies "Use SI units.". Specify "use of SI"! Then multiples and submultiples are included. > > 2.2 SI prefixes... > The term units includes ... and all units formed from them using > the SI prefixes. That is a blatant distortion of the present BIPM Brochure on the SI. There are SI units and there are multiples and submultiples of SI units as defined in the present Brochure. Very simple! Why distort it? I hope it is not approved in the next edition. Gene.
