What is projection?

Imagine you're shining a flashlight on your hand, that’s projection!

You know how when you put your hand between a light and a wall, it leaves a shadow? That's like projection: taking something 3D (like your hand) and making it look flat (like the shadow on the wall).

Think of projection as a kind of copy machine for shapes. If you have a cube, like a building block, and you shine light on it from one side, it makes a shape on the wall. That shape is the projection of the cube. It’s not the whole cube anymore, just a flat version of it.

People use projection all the time. For example, when you watch a movie on a big screen, the images are like projections from tiny pixels on a phone or computer. Or imagine drawing a map, that’s like taking a 3D Earth and making it flat so we can see it better.

So next time you see a shadow or a picture on a wall, remember: that's projection at work! Imagine you're shining a flashlight on your hand, that’s projection!

You know how when you put your hand between a light and a wall, it leaves a shadow? That's like projection: taking something 3D (like your hand) and making it look flat (like the shadow on the wall).

Think of projection as a kind of copy machine for shapes. If you have a cube, like a building block, and you shine light on it from one side, it makes a shape on the wall. That shape is the projection of the cube. It’s not the whole cube anymore, just a flat version of it.