Terahertz tomography

Terahertz tomography is like a magic box that can see through things! It uses a special type of light called terahertz waves, which are too small for our eyes to see but can pass through lots of materials like clothing or even human skin.

Let's pretend you have a toy car hiding inside a box. You can't see it because the box is closed, but if you use terahertz waves to look inside, you can see the shape of the car! This is like when doctors use x-rays to see inside your body to see if you're sick or hurt.

Terahertz tomography is the same idea, except instead of x-rays, it uses terahertz waves to build a 3D image of what's inside an object. It can be used to check for problems with important things like aircraft engines, or to see if food is contaminated.

So basically, terahertz tomography is a cool way to use special light to see through things that we can't see with our own eyes!