Lumen (unit)

Okay kiddo, a lumen is a special unit that we use to measure how bright a light is. It's like how we use a ruler to measure how long something is, or a scale to measure how heavy something is.

Basically, when we turn on a light, it gives off a certain amount of light energy. The more energy it gives off, the brighter the light will be. A lumen is a way to measure how much energy a light is giving off in the form of light.

So when we say a light bulb has 800 lumens, we mean that it is giving off a certain amount of energy in the form of light, and that amount is equal to 800 lumens. This helps us compare different lights and see which one is brighter or more efficient.

But remember, just because a light has more lumens, doesn't necessarily mean it's better. Some lights might have a lot of lumens but they might also use up a lot more energy, meaning they are less efficient. So it's important to look at all the factors when choosing a light source.

In short, a lumen is a way to measure how much light energy a source is giving off, and it helps us compare different lights to see which one is brighter or more efficient.