Assertion: flashlight's lumen | /r/HasProperty | lm
Facets:
Source sentences:
text: Lumen (LM)
text: Lumen (lm), or luminous flux, is the measure of the total “amount” of visible light emitted by a source.
text: That light is often measured in lumens (lm), thanks to a recent marketing strategy that's really caught on in the last decade or so.
text: Lumen (lm) is a measurement of the total energy output (or total visible light) from a light source in all directions.