> wiki   Explore:web images videos games  

Lumen (unit)

KidzSearch Safe Wikipedia for Kids.
Jump to: navigation, search

The lumen (symbol: lm) is the SI derived unit for brightness. It is defined as 1 candela times 1 steradian.

One lumen is about a twelfth the brightness of a candle, so a candle has a brightness of around 12 lumens.

It says on the package that this lightbulb makes 470 lumens.