The Bedtime Scientist

A question

How does electricity get to my house?

A calm, true answer. Then, if the wondering keeps going, the whole episode.

The short answer

Along a copper road. Power stations push on the electrons already sitting in the wires, and that push passes from one electron to the next like a whisper down a long line of friends, all the way to your wall.

The push travels at nearly the speed of light, which is why the lamp comes on the instant you touch the switch. The electrons themselves barely shuffle. It is the message that is fast, not the messengers.

Go deeper tonight

Electricity: The Copper Highway

The full episode, in one calm voice, with nothing that startles.

The episode

Electricity: The Copper Highway

0:00 8:40
Sleep timer

Read the guide for this one in the morning.

This connects to

Heat and energy Force and machines

One idea turns up in many different nights. Follow one and the library starts to join up.