ELI5: Explain Like I'm 5

Optimal Energy Joule

Energy joules tell us how much energy something has. Just like how a banana can give you energy to run around the playground, different things have different amount of energy joules.

Now, when we talk about optimal energy joule, we mean the perfect amount of energy for something to work at its best. Like how your toy car works best with new batteries which have a certain amount of energy joules.

When scientists try to figure out the optimal energy joule for something, they study it closely to see how it works and what it needs to function the best. Then they try to give it the exact amount of energy joules it needs without giving it too much or too little.

By finding the optimal energy joule, we can make sure things work the best they can and we use energy efficiently. It's like putting just the right amount of gas in your bike to ride smoothly without spilling or running out of gas.