-----Original Message----- From: Ma Be <[EMAIL PROTECTED]> To: U.S. Metric Association <[EMAIL PROTECTED]> Date: March 31, 2002 11:52 Subject: [USMA:19175] Re: What is an SI unit?
>On Thu, 28 Mar 2002 19:08:48 > Bill Potts wrote: > >>There's a very common exception -- L/100 km. (Price/100 g is not, of course, >>an exception, as currency units are not SI.) >>... >Now, here I have some trouble with the above. To me one can *always* find adequate ratio ranges that would stick with existing prefixes, and clearly L/100 km simply does not follow that principle Well, maybe the idea of L/Mm should be postponed and simply use what SI gives us: L/hm The L/Mm version, because it is 1/10th as large, avoids decimal numbers for 'normal' situations. (and also another reason why I personally dislike this ratio quite a bit, I'd rather use km/L, but that discussion has been done here to death so I won't rekindle it). [Obviously, your disclaimer didn't work.] Duncan > >But as for the other ratio I also disagree a little bit. First, because currency could be treated as just any other ordinary unit, and second because we do have a prefix for 100, the h. Therefore, I see nothing wrong in using $/hg. > >Cheers, > >Marcus
