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What is a Lumen?

What is a Lumen?

A Lumen is defined as: The SI unit of luminous flux, equal to the amount of light per unit time passing through a solid of one steradian from a light source of one candela intensity radiating equally in all directions. Source – http://www.thefreedictionary.com/lumen. In a Nutshell In a nutshell, a lumen is a unit of measurement […]