Template talk:SI light units

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the term "SI" is used but not defined in this article, nor does a content search of Wikipedia define this term. Will someone who knows what this means please add it to this article, or place a link here to another area of Wikipedia that defines this? 68.62.20.247 01:19, 18 October 2007 (UTC)

See SI. Dicklyon 03:00, 18 October 2007 (UTC)

SI is short for Le Système international d'unités, or in English the International System of Units. It is what is commonly called the metric system. Note that this is not an article, but rather a template to be used inside articles. Articles that include this template should normally have a link to the article on SI. A content search for "SI" does produce the correct article, but note that searches are case sensitive.--Srleffler 04:33, 18 October 2007 (UTC)

[edit] Circular definition?

The definition for luminous flux and luminous intensity are circular. Isn't there a better way to do it that is not? It would be like cracking open a dictionary and seeing "Redundant: see superfluous" and then "Superfluous: see redundant." You get nowhere. —Preceding unsigned comment added by AZylman (talk • contribs) 08:46, 3 January 2008 (UTC)

No, they're not. But you need to go where they are defined. The base unit is candela, as the table shows, so that one is not defined in terms of any of the others. Dicklyon (talk) 16:00, 3 January 2008 (UTC)

As Dick notes, they aren't circular because they are not definitions. See the individual articles for definitions of these quantities. The relation cd=lm/sr is redundant, as you noted. This redundant equation is there for convenience.--Srleffler (talk) 18:04, 3 January 2008 (UTC)