A lumen is a unit of measurement that quantifies the amount of visible light emitted by a source per unit of time). It is a measure of the total amount of visible light emitted by a lamp or light source. Lumens are used to determine the brightness of a light bulb, and the higher the number of lumens, the brighter the light. Lumens are to light what pounds are to bananas or gallons are to milk.

In the past, wattage was used as a universal indicator of a light bulbs brightness, but with the development of energy-efficient LED technology, lumens have become the standard measurement for brightness. When shopping for light bulbs, it is important to compare lumens to ensure that you are getting the amount of light or level of brightness you want. The Lighting Facts Label on light bulb packaging makes it easy to compare lumens and choose the right bulb for your needs.

To replace a 100-watt incandescent bulb, look for a bulb that gives you about 1600 lumens. If you want something dimmer, go for fewer lumens, and if you prefer brighter light, look for more lumens. The brightness, or lumen levels, of the lights in your home may vary widely, so it is important to consider the amount of lumens you need when buying light bulbs.

In summary, a lumen is a unit of measurement that quantifies the amount of visible light emitted by a source per unit of time. It is used to determine the brightness of a light bulb, and the higher the number of lumens, the brighter the light. When shopping for light bulbs, it is important to compare lumens to ensure that you are getting the amount of light or level of brightness you want.