Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

What is a lumen and is there any relationship between lumens and wattage?

April 26, 2017lumen lumens relationship wattage

0

Posted

What is a lumen and is there any relationship between lumens and wattage?

1 Answer

0

Posted

A lumen is the unit of luminous flux equal to the light emitted in a unit solid angle by a uniform point source having an intensity of one candela. There is no direct correlation between lumens and watts because other variables may affect the relationship, such as lamp design life and fill pressure. Efficacy, given in lumens per watt, is the total luminous flux emitted by a lamp divided by the total power input.