Cavity magnetron

A magnetron is a part inside a microwave oven that makes the microwaves that cook our food. A magnetron has two important parts: the anode and the cathode. The anode is a metal ring that has a bunch of little holes in it. The cathode is a smaller metal cup inside the ring.

When we turn on the microwave, it sends electricity into the cathode. The cathode gets really hot and shoots tiny particles called electrons towards the anode. As they pass through the holes in the anode, they produce energy that makes microwaves.

The cavity magnetron is a special kind of magnetron. It has a special shape, almost like a box, with two pole pieces at either end that help to focus the electrons in the cathode towards the anode. This makes it more efficient at producing microwaves than other types of magnetrons.

Cavity magnetrons are used in lots of things besides microwave ovens, like radar systems, particle accelerators, and even some medical equipment. They're really important for our modern technology!