Okay kiddo, so first we need to talk about what an orbit is. Have you ever seen the planets in our solar system move around the sun? That's an orbit! It's like a path that objects in space take as they go around something else.
Now, when we talk about light, it's a little bit different because it doesn't have any mass. But did you know that light can also have an orbit? It's kind of like a wave that's moving around in a circle instead of just going straight.
This orbit has a special name - it's called orbital angular momentum. It's like a twirl that the light is doing as it moves forward. Think of it like this - have you ever spun around in a circle really fast? That's kind of what the light is doing, but it's doing it as it moves forward.
Now, this orbital angular momentum can be helpful in lots of different ways. Scientists are still studying all the ways this type of light movement can be used, but so far they've found that it can be used in things like optical communication (sending messages using light) and even in surgery!
So there you go, kiddo, that's a basic explanation of light orbital angular momentum. It's kind of like light doing a twirl as it moves forward, and it can be really helpful in lots of different ways!