Lumens are a unit of measurement that quantify the amount of visible light emitted by a source, such as a light bulb. The higher the lumen rating, the brighter the light. For example, a standard 60-watt incandescent bulb typically produces about 800 lumens, while a 100-watt bulb can produce around 1600 lumens. Lumens help consumers choose the right lighting for their needs, whether for a cozy atmosphere or bright task lighting. When shopping for lighting, it's essential to consider lumens alongside other factors like color temperature and energy efficiency to ensure the best choice for your space.