>The truth is, those you are trying to dumb down to by using AU don’t understand AU either.
I must be misunderstanding you, because this sounds remarkably similar to you telling me that I am bad at my job and that you can tell me how to do it. I most certainly do not "dumb down" my work, which anyone who has actually seen me work could tell you. I did not invent the AU. It is accepted for use with the SI and I use it. I also use liters and centimeters if you'd care to reprimand me for that. In the mean time, I have to insist that all the complaints on this mailing list about things not being metric enough are entirely self-defeating. ES On 27 June 2014 18:37, Harold_Potsdamer <[email protected]> wrote: > Eric, > > I have to agree with John on this. Units only become meaningful with > use. This is why SI is so superior. You can pick a prefix that puts the > numbers in a meaningful range. > > The truth is, those you are trying to dumb down to by using AU don’t > understand AU either. > > Harold > > *From:* John M. Steele <[email protected]> > *Sent:* Friday, 2014-06-27 06:40 > *To:* U.S. Metric Association <[email protected]> > *Subject:* [USMA:54069] Re: New supplement to the SI Brochure > > But gigameters, terameters, petameters, etc. are not. That's what > prefixes are for, and they continue to a range that could handle the > universe. The AU is approximately 149.6 Gm, the parsec about 30.86 Pm. > > > ------------------------------ > *From:* Eric L Shuman <[email protected]> > *To:* U.S. Metric Association <[email protected]> > *Cc:* U.S. Metric Association <[email protected]> > *Sent:* Friday, June 27, 2014 2:48 AM > *Subject:* [USMA:54068] Re: New supplement to the SI Brochure > > Because the numbers are beyond human comprehension. This part of my > job requires me to provide some meaningful sense of proportion. > > Earth is 149 597 871 km from the Sun. That's our STARTING point. Meters, > kilometers, miles, furlongs, parasangs and stadia are totally meaningless > on the astronomical scale. > > > > > On 26 June 2014 17:45, Harold_Potsdamer <[email protected]> wrote: > > Why? Since the AU is fixed to the metre, why not just use the metre > and its prefixes? > > > > *From:* Eric L Shuman <[email protected]> > *Sent:* Thursday, 2014-06-26 15:31 > *To:* U.S. Metric Association <[email protected]> > *Cc:* U.S. Metric Association <[email protected]> > *Subject:* [USMA:54054] Re: New supplement to the SI Brochure > > Thanks for bringing this to my (our) attention! I use the astronomical > unit in outreach work that I do, so this is good to be aware of. > > > On 26 June 2014 07:36, James <[email protected]> wrote: > > Dear Folks, > > The BIPM has issued a supplement to the SI Brochure. It alters the order > of the base units in defining derived units (Tables 6 and 7), it reflects > the recent IAU decision to define the astronomical year as a fixed and > exact number, and it makes some updates reflecting the latest CODATA, among > other things. > > http://www.bipm.org/utils/common/pdf/si_supplement_2014.pdf > > Best regards, > > Jim Frysinger > > -- > James R. Frysinger > 632 Stoney Point Mountain Road > Doyle TN 38559-3030 > > (C) 931.212.0267 > (H) 931.657.3107 > (F) 931.657.3108 > > > > > > >
