User talk:Bobblewik/electromagnetic radiation
units involving light
[edit]lumens
[edit]Could you eyeball Lux and Talk:Lux?
An anon has edited Lux, changing phrases like "1000 lumens" to "1000 lumen" on the grounds that "Symbols are written in singular, e.g. 25 kg (not "25 kgs"). Similarly it is lumen not lumens." I'm pretty sure he's wrong about that—that is, it applies tot he symbols, but not to the fully-spelled-out unit names—and have cited an NIST style guide on the talk page.
What I'm much less certain of is his use of "klx," "μlx", &c. These are presumably valid combinations of an SI prefix and symbol. What bothers me is that I've never, never, never seen them in use. I've always just seen the base unit, with the value in scientific notation. E.g. instead of saying "direct sunlight is about 100,000 lux," in a scientific or technical context you'd see "direct sunlight is about 105 lux," but never "direct sunlight is 100 klx." But I'm no SI guru. What if anything can be said about the use of such constructions? [[User:Dpbsmith|Dpbsmith (talk)]] 14:45, 9 Oct 2004 (UTC)