Daylight factor

Daylight factor is a way of measuring how much natural light enters a room. Imagine you're in a room with a window, and it's a sunny day outside. When you look around the room, you'll notice that some parts are brighter than others. The daylight factor is a way of measuring that brightness.

Basically, daylight factor tells you how much light is getting into the room compared to how much light is outside. For example, let's say it's very cloudy outside, and only a little bit of light is coming through the window. In that case, the daylight factor would be low, because not a lot of light is getting into the room.

On the other hand, if it's a bright, sunny day, and a lot of light is coming through the window, the daylight factor would be high, because a lot of light is getting into the room.

Designers and architects use daylight factor to help them plan and build buildings that make the most of natural light. By understanding how much light will enter a room, they can make sure that people inside will be able to see well, and won't need to rely on artificial light sources as much. This can be good for the environment, because it can reduce the amount of energy needed to light the building.