Feedthrough

Okay kiddo, imagine you have a toy box with a lid that has a hole in it. You want to put some toys in the box without opening the lid.

A feedthrough is kind of like that hole in the lid. It's a hole in a container or a wall that allows something to pass through without opening the container or wall.

For example, imagine you have a fish tank with a pump that needs to be powered by electricity. You don't want to have to take the pump out of the tank every time you need to plug it in. So instead, you can use a feedthrough that lets you plug the pump into an outlet outside the tank, but still allows the wires to pass through the tank wall.

Feedthroughs can be useful in lots of different situations, like in scientific experiments where you need to pass wires or tubes through a sealed container without breaking the seal. Or in space missions where you need to keep a spacecraft sealed, but still want to pass signals or power through the walls.

So, think of feedthroughs as little holes that help us do things without breaking a seal or opening up a container. Pretty cool, huh?