Radar imaging

Radar imaging is like playing hide and seek, but with technology. We use a machine called a radar to help us find things that we can't see with our eyes.

Imagine you are trying to find your friend hiding behind a wall. You can't see your friend, but you know she is hiding there. You shout, "Marco!" and your friend responds with "Polo!" You heard her voice coming from the wall, so you know she's close. That's kind of how a radar works.

The radar machine sends out a signal, like a shout. That signal bounces off objects, just like your shout bounces off the wall. When the signal comes back to the radar machine, it gives us information about what is out there.

Now imagine you are playing hide and seek outside in the dark. You can't see your friend, but if she has a flashlight, you will see a beam of light that shows you where she is. The radar machine does something similar. It sends out a signal that we can't see, but it gives us a picture of what is out there, kind of like a flashlight beam.

The picture is not just any picture, though. It's a special kind of picture that tells us about the size, shape, and location of things that we can't see with our eyes. We can use radar imaging to find things like airplanes, ships, and even things hidden underground.