>From section 3.3.2.4 on volume in IEEE/ASTM SI 10-2002: ³In 1979, the CGPM approved the letters l and L as alternative symbols for the liter. Because the letter symbol l can easily be confused with the numeral 1, the symbol L is recommended for use in the U.S.²
From: Stan Jakuba <[EMAIL PROTECTED]> Reply-To: <[EMAIL PROTECTED]> Date: Mon, 7 May 2007 12:02:48 -0400 To: "U.S. Metric Association" <[email protected]> Subject: [USMA:38613] Re: A word about global warming Stan D. at al: Let me explain. First of all, there is no L in SI at all. The substitute symbol for the SI dm³ is l (lower case "el"). Yes, people use also a script "el" and other symbols that, albeit common, are not any more SI than dkg and similar ubiquitios traditions. The litre is a nickname for the cubic decimetre as Bill is to William. It is not a unit, because, by definition, SI is a coherent system. Yes, several nicknames are allowed with SI, but that does not make them SI. None of them is supposed to be combined with prefixes, and that for obvious reasons, confusion and safety among them. Stan J. > > ----- Original Message ----- > > From: STANLEY DOORE <mailto:[EMAIL PROTECTED]> > > To: [EMAIL PROTECTED] ; U.S. Metric Association <mailto:[email protected]> > > Sent: 07 May 06, Sunday 17:36 > > Subject: Re: [USMA:38600] Re: A word about global warming > > > > Stan J et al: > > > > The L is an accepted unit in the SI. If there is no kL in the SI then the L > is not an accepted unit. Standard SI prefixes are used with all sorts of > units such as bytes, bits etc. > > > > The selection of numbers as Stan J. indicates for J for energy is a matter > of context. > > > > Regards, Stan Doore > > > > > >> >> ----- Original Message ----- >> >> From: Stan Jakuba <mailto:[EMAIL PROTECTED]> >> >> To: U.S. Metric Association <mailto:[email protected]> >> >> Sent: Sunday, May 06, 2007 8:56 AM >> >> Subject: [USMA:38600] Re: A word about global warming >> >> >> >> Pat: >> >> I admire the effort behind your collecting the plethora of those useless >> units. As to the request for comments - on the negative, it is the usual >> metric-perception-harming expressing numbers, particularly with energy >> usage, in more that two significant digits. >> >> >> >> I'd change the values to 1600 PJ, 1000 PJ, 290 PJ, and retain 56 PJ. This >> despite the stupidity of the original numbers - they were obvioulsy >> converted from something else by a person with a calculator but no brains. >> Particularly with coal where the energy content can differ 40 % from one >> mine to another. >> >> >> >> And use symbols. Not everybody speaks English or knows the english spelling >> of the unit words or prefix words. Let's use SI among us to its ultimate >> goal - a unified language of measurements world over, regardless of cultural >> preferences. >> >> Stan J. >> >> PS: A note to the other Stan: For the above reason there is no such thing as >> kL in SI. >> >> >> >> >> >> ----- Original Message ----- >> >>> >>> From: Pat Naughtin <mailto:[EMAIL PROTECTED]> >>> >>> To: U.S. Metric Association <mailto:[email protected]> >>> >>> Sent: 07 May 05, Saturday 05:57 >>> >>> Subject: [USMA:38593] A word about global warming >>> >>> >>> Dear All, >>> >>> Last week's discussion about global warming measurements stirred my stumps >>> to the extent that I have now revised the article, 'A word about global >>> warming' and you can download the three page pdf file from >>> http://www.metricationmatters.com/docs/AWordAboutGlobalWarming.pdf >>> >>> I would appreciate any comments or suggestions that you might have. >>> >>> Cheers, >>> >>> Pat Naughtin >>> PO Box 305, Belmont, 3216 >>> Geelong, Australia >>> Phone 61 3 5241 2008 >>> >>> Pat Naughtin is the editor of the free online monthly newsletter, >>> 'Metrication matters'. >>> Subscribe at http://www.metricationmatters.com/newsletter >>> >>> Pat is recognised as a Lifetime Certified Advanced Metrication Specialist >>> (LCAMS) with the United States Metric Association. He is also editor of the >>> 'Numbers and measurement' section of the Australian Government Publishing >>> Service 'Style manual for writers, editors and printers'. He is a Member >>> of the National Speakers Association of Australia and the International >>> Federation for Professional Speakers. See: http://www.metricationmatters.com >>> >>> This email and its attachments are for the sole use of the addressee and >>> may contain information that is confidential and/or legally privileged. >>> This email and its attachments are subject to copyright and should not be >>> partly or wholly reproduced without the consent of the copyright owner. Any >>> unauthorised use of disclosure of this email or its attachments is >>> prohibited. If you receive this email in error, please immediately delete >>> it from your system and notify the sender by return email.
