Thermodynamics Made Easy !!link!!

Ah, the perpetual motion machine dream! Here’s why it fails: The wind turbine creates drag. The engine has to burn extra gas to push through that drag. The energy you get from the turbine is always less than the extra gas you burned. That is the Second Law (inefficiency) crushing your dreams.

That’s it. This is the First Law of Thermodynamics, but in plain English: You can’t get something for nothing. thermodynamics made easy

In thermodynamics, this means heat always moves from hot to cold, never the other way around without help. This is why your coffee cools down. The heat energy spreads out into the cooler room until everything is the same temperature. The Third Law: The Ultimate Stop Ah, the perpetual motion machine dream