Why don't perpetual motion machines exist

Hello everyone! Have you ever wondered why no one has invented a perpetual motion machine? Everyone talks about it, everyone knows about it, but not one scientist has managed to create such machine. Just imagine: an eternal source of energy that will allow humans to stop worrying about electricity or having to refuel their cars every day. So, why hasn't it been invented yet? The answer is… because it's not as easy as it seems!

Видео Why don't perpetual motion machines exist канала True Story