On 2007 May 7 , at 12:02 PM, Stan Jakuba wrote:
Let me explain. First of all, there is no L in SI at all. ...
The litre is a nickname for the cubic decimetre as Bill is to
William. It is not a unit, ...
I can't agree, Stan.
While it is certainly true that the litre is not an SI unit, it is
most certainly recognized by BOPM as a unit, all-be-it a "non-SI
unit". I refer you to pages 123 and 124 of the official BIPM guide to
SI*.
The chapter, in which the litre and other such units are discussed,
is titled "Units (sic) outside the SI" and it includes the statement
that "table 6 includes non-SI units ...". That table, which includes
the litre (and the litre symbols "l" and "L"), is titled "Non-SI
units accepted for ...". In that table, the litre is displayed in a
column headed ""Name of unit" and the symbols "L" and "l" are listed
in a column labeled "Symbol for unit".
Clearly, in everything that the BIPM publication says about the
litre, it refers to the litre as a unit. The fact that it is not an
SI unit supports the contention that SI prefixes should not be used
with it.
Regards,
Bill Hooper
==================
* "The International System of Units (SI)" 8th Ed. 2006 published by
BIPM (The International Bureau of Weights and Measures)
