I agree with you on my wrong use of the symbol for megajoule.
We'll have to agree to differ on the dollar sign.
Bill Potts, CMS
San Jose, CA
http://metric1.org [SI Navigator]
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
> Behalf Of Gene Mechtly
> Sent: January 12, 2001 15:54
> To: U.S. Metric Association
> Cc: U.S. Metric Association
> Subject: [USMA:10443] Heat per Dollar
>
>
> On Wed, 10 Jan 2001, Bill Potts wrote:
>
> > ...it has to be "energy per dollar ... ... is 440 MJ"...
> Granted, Bill, this form is acceptable.
>
> > or "the value of energy ... ... is 440 MJ per dollar."
> This form violates the rule that unit symbols should not be mixed
> with unit names. "440 MJ per dollar" violates that rule. Written in
> full, however, "440 megajoules per dollar" is acceptable.
>
> Although the unit of currency, "dollar", is not an SI unit, and
> MJ/$ is a mix, it is an easily understood mix; as is, for example, energy
> divided by mass in unit symbols MJ/t, containing only *one* "SI Unit."
>
> My opinion remains that 440 MJ/$ is acceptable. One of our
> colleagues from Canada has agreed (privately) that MJ/$ is acceptable.
> However, it might be necessary to write 440 MJ/$US, to avoid confused with
> similar values expressed as ... MJ/$Canadian, for data from both nations.
>
> Gene.
>
>
