The brightness of an electric light is measured in lumens. A 60 watt incandescent light bulb has a brightness of 800 lumens. The efficiency of an electric light is measured in lumens per watt. Incandescent light bulbs have an efficiency
LED Lights

The brightness of an electric light is measured in lumens. A 60 watt incandescent light bulb has a brightness of 800 lumens. The efficiency of an electric light is measured in lumens per watt. Incandescent light bulbs have an efficiency