André Blondel was a really smart man who lived a long time ago, and he liked electricity a lot. He figured out a way to measure how much electricity was being used by machines and people in their homes.
He made something called a meter that would show how much electricity you were using, kind of like a gas gauge in a car. This was really important because it helped people understand how much energy they were using and how to save it.
Blondel also did a lot of experiments to see how electricity worked and how it went from one place to another. He found out that electricity runs through wires and can do things like turn on lights or make machines work.
Thanks to people like Blondel, we now have a better understanding of how electricity works and how to use it wisely.