Imagine you are holding a special camera that can see through walls and clouds. But instead of using regular light, it uses something called microwaves.
Microwaves are like sound waves but much smaller and faster. They can go through things that light can't, like a thick wall or a storm cloud.
Now, when you point this camera at something, it takes a picture using the microwaves. But instead of a regular picture, it shows you the temperature of the things it sees.
For example, if you point it at a hot bowl of soup, it will show you that the soup is very hot. Or if you point it at the sky, it will show you the temperature of the clouds and the air around them.
This special camera is called an imaging microwave radiometer. It's used by scientists to study the weather, the environment, and even outer space. By taking pictures of temperature using microwaves, they can learn a lot about what's happening around us that we can't see with our eyes.