Infra-red search and track

Infra-red search and track is like a way for certain machines to see things that are too far away or too hard to see with regular eyes. It works by using a special kind of light called infra-red light.

Have you ever held your hand up to a light and noticed that it feels warm? That's because the light is giving off something called heat. Infra-red light is a type of light that we can't see with our eyes, but it still gives off heat.

So, these machines use special sensors that can detect this infra-red light, even from far away. When they find something that's giving off enough heat (like a plane or a car), they track it and follow it using the infra-red light.

This can help us keep track of things we might not be able to see with our regular eyes, like planes flying far away in the sky. It's like having a special superpower that lets us see things from far away that we wouldn't be able to see otherwise!