Alexanderson alternator

Hey there little buddy! Today we are going to learn about something called the Alexanderson Alternator.

You know how you turn on a light switch and the light comes on? That's because electricity is flowing through wires and bulbs. The Alexanderson Alternator is a machine that makes electricity too but in a different way.

It is a big machine, almost as big as the ceiling in our room! In the machine, there are two big wheels with a lot of metal wire wrapped around them. When one wheel spins really fast, it makes the metal wire move up and down really fast. This makes electricity flow through the wire and it also makes a type of wave called radio waves.

These radio waves can travel really far and can be picked up by radios all over the world! This was really important a long time ago because people could talk to each other without needing long wires or being in the same place all the time.

So that's it! The Alexanderson Alternator is a big machine that makes electricity and radio waves that can travel all over the world. Cool, right?