ELI5: Explain Like I'm 5

Perceived visual angle

Perceived visual angle is how big something looks to you when you see it. Imagine you are looking at a big toy car and a small toy car. Even though the big car is farther away, it looks bigger to you because it takes up more space in your vision.

This is because when we look at something, our eyes send a message to our brain about what they are seeing. The brain then uses this information to create a picture in our minds. The size of the picture depends on how big the thing is and how far away it is.

So, even though the big toy car is far away, it looks big to us because it takes up more space in our vision. This means that the perceived visual angle of the big car is larger than that of the small car.

Perceived visual angle is important because it helps us understand the world around us. It allows us to judge distances, sizes, and shapes so we can interact with things in our environment. So, the next time you see something, think about how big it looks to you and how far away it might be!