I have seen several mails on this. While it is true that 'y and yr' are both used to represent duration of the year. And, you observe:
Reasons not to use y:
- The element Yttrium is Y
- SI prefixes include Y yotta and y yocto
- Graphs have a y-axis
How often does: *time duration, year; Yttrium, yotto or yocto and y-axis* need be represented in a single reference? It is good to write 'year' in its fuller form; but computers demand abbreviations to be used as time savers. 834 y or 834-yr (with a hyphen) to represent a *cycle of 834-yr/148 LWks* should harly cause confusion in SI brochure; or be mis-understood for element, Yttrium (Y); yotto (Y) or yocto(y) etc.
Year is often represented as: Y2000 =365.242189669781 days or 365d 5h 48m 45s.1874691. I personally feel there should be NO CONFUSION to use *y or -yr* to express year (but hyphen should be used, when using it for years (as in 834-yrs).
Brij Bhushan Vij <[EMAIL PROTECTED]>
20031022/13:51 PM(IST)
Aa Nau Bhadra Kritvo Yantu Vishwatah -Rg Veda.
*****The New Calendar Rhyme*****
Thirty days in July, September:
April, June, November, December;
All the rest have thirty-one; accepting February alone:
Which hath but twenty-nine, to be (in) fine;
Till leap year gives the whole week READY:
Is it not time to MODIFY or change to make it perennial, Oh Daddy!And make the calendar work with Leap Week Rule! ***** ***** ***** *****
From: David Shatto <[EMAIL PROTECTED]> Reply-To: [EMAIL PROTECTED] To: "U.S. Metric Association" <[EMAIL PROTECTED]> Subject: [USMA:27239] Re: URGENT!!! Date: Tue, 21 Oct 2003 15:44:35 PST
Sorry, I couldn't find a definitive answer either, which leads me to think there isn't one. Here's some of my miscellaneous findings:
The online "How Many? A Dictionary of Units of Measurement" by Russ Rowlett and the University of North Carolina at Chapel Hill shows: "year (a or y or yr) "
The couple dictionaries I checked showed both "y" and "yr" as abbreviations.
- for CAS, a division of the American Chemical Society, the standard is "yr"
- on the BIPM site I found one paper that used the abbreviation "yr", but
no papers that used "y", for year
- SI uses s for second, which works in both French and English. I'd find
it hard to believe the French would accept a standard using "y" or "yr"
for year. "a" would work for both languages.
Reasons not to use y: - The element Yttrium is Y - SI prefixes include Y yotta and y yocto - Graphs have a y-axis
David Shatto Los Angeles
On Tue, 21 Oct 2003 15:52:55 -0700 "Ma Be" wrote:
> Dear colleagues, > > I've tried and tried and tried, but to no avail. I'm attempting to > substantiate that the correct symbol for year is simply 'y', and not > (for instance) 'yr'. > > Can anyone here give me a reference to that effect? Preferrably from > BIPM itself. I surfed there today for like an hour without ANY success. > > And, yes, I'm *desperate* because I need to provide this reference by > the end of today!... > :-S Sorry about the urgency... > > Any help is very appreciated. > > Bye for now. > > Marcus > > > ____________________________________________________________ > Get 25MB of email storage with Lycos Mail Plus! > Sign up today -- http://www.mail.lycos.com/brandPage.shtml?pageId=plus >
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