Lumens

They are about equivalent to flourescent in Lumens/Watt.

Lighting the Big Apple With L.E.D.’s - Bits Blog - NYTimes.com 2008

Towers cost "Lumens" to build, which is basically the game's magical equivalent of money (you earn Lumens for each monster you destroy).

Jay is Games anarky 2009

(Lumens per watt is similar to miles per gallon - the higher the number represents greater efficiency)

Sustainable Design Update » Blog Archive » LED Light Sets New Record 2009

(Lumens per watt is similar to miles per gallon - the higher the number represents greater efficiency)

Sustainable Design Update 2010

Lumens already appear on bulb packaging, but consumers often overlook the fine print.

Traditional incandescent bulbs on their way out starting Jan. 1 2011

Lumens indicate how much light the bulb provides and Energy Star says a 40-watt replacement should have at least 450 lumens.

Builders' Show: A lower-priced LED lightbulb 2011

Small colored LED lights put out 70-80 Lumens per watt of power … The brightest white LEDs do 30-40.

Lighting the Big Apple With L.E.D.’s - Bits Blog - NYTimes.com 2008

At super efficient white LED gives around 100 Lumens per Watt of electrical input (depending on color), so to get 600-800 lumens would require at least 5 Watts and 5Watts is 5 Joules per second so 2000 Joules gives you 2000/5 or 400 seconds worth of light – less than 7 minutes.

GREENER GADGETS WINNERS ANNOUNCED! | Inhabitat 2008

When the changes take place bulbs will appear with the symbol Lm for Lumens instead of W for Watt.

Archive 2009-05-01 2009

When the changes take place bulbs will appear with the symbol Lm for Lumens instead of W for Watt.

[mini-blogfocus] to be added to 2009