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Instead, we need to make use of lumens. A lumen is a measure of visible light energy. The upper the lumens, the brighter the light. All lighting manufacturers are starting to inform us what number of lumens are produced by each of their products.</p><br><br><span style="display:block;text-align:center;clear:both"><iframe width="640" height="360" src="https://www.youtube.com/embed/AdyqqcM6zgg?showinfo=0&rel=0&fs=0" frameborder="0" allowfullscreen title="Use Old Led Bulbs You Will Never Have to use Batteries Again (c) by ElectroRobotics"></iframe></span><p>We see these lumen numbers on the Lighting Facts labels discovered on all new LED bulb packages. It might take some time to get used to utilizing lumens instead of watts, but it_s vital with the intention to make the perfect lighting choices. Now that we perceive watts and lumens, we can use both terms to come up with lumens per watt or "efficacy" (or "luminous efficacy"). 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