What Is A Luman - Lumens (lm) are a measure of the amount of light from a light source visible to the human eye. A bulb will appear to be brighter when its lumen. A lumen is a measure of the amount of brightness of a lightbulb. A lumen is a unit of luminous flux that measures how much visible light a lamp or fixture produces. The lighting facts label helps you compare lumens, not watts, when buying light. Learn how to compare and choose your lighting.
A bulb will appear to be brighter when its lumen. A lumen is a unit of luminous flux that measures how much visible light a lamp or fixture produces. A lumen is a measure of the amount of brightness of a lightbulb. Learn how to compare and choose your lighting. Lumens (lm) are a measure of the amount of light from a light source visible to the human eye. The lighting facts label helps you compare lumens, not watts, when buying light.