On Fri, 13 Dec 2002, G. Stanley Doore wrote: > ... > The NOAA National Weather Service won't even adhere to the SI derivative > for pressure. For example, the NWS uses hPa rather than kPa for > pressure.
Stan, Both prefixes hecto and kilo are equally acceptable at the level of the CGPM and the BIPM. It is only secondary groups that have not yet entirely agreed on preferences for one prefix or another. By what convention do you claim that "the SI derivative for pressure" must be kPa rather than hPa, and imply that other multiples, e.g. MPa, etc. are not acceptable? > Canada uses kPa to be consistent with other industries in reporting > atmospheric pressure.. What "other industries" do you have in mind, and how are their preferences for prefixes demonstrated (by convention, or usage)? Gene.
