Hey kiddo! Do you know what a sensor is? It's a tool that can tell us about something that we can't see or measure ourselves.
Well, a wavefront sensor is a special kind of sensor that helps scientists and doctors look at light in a way that lets them see very small things that they might not be able to see normally.
You know how when you take a picture, you can see everything in the picture all at once? A wavefront sensor is like that but for light. It takes a picture of light and helps scientists and doctors understand how it's moving and what it's doing.
It does this by looking at the shape of light waves. Light waves are kind of like tiny oceans that carry light from one place to another. And just like how the waves in an ocean have crests and troughs, light waves have peaks and valleys.
Wavefront sensors measure how these peaks and valleys are arranged by using tiny mirrors and computer programs. They can tell us things about the way light is bending or getting distorted, which can help us figure out what might be wrong with our eyes or even the way light moves through the galaxy.
So, there you have it kiddo! A wavefront sensor is a special tool that takes a picture of light waves and helps us understand how they're moving and what they're doing.