ELI5: Explain Like I'm 5

Atomic hydrogen welding

Hello little one! Today, I will tell you all about atomic hydrogen welding.

So, do you know what an "atom" is? It's the tiniest thing we can see or imagine, and everything around us is made up of atoms. Even you and I are made up of atoms!

Now, imagine we have two pieces of metal that we want to join together. One way to do this is by heating the metals until they melt, but that can be dangerous if we're not careful. Another way is by using an electric current to make hydrogen atoms very, very hot.

When we do this, the hydrogen atoms become "ionized." It means that they lose an electron and become positively charged. We put a small flame between the two metals we want to join, and the ionized hydrogen atoms flow toward the flame.

The really cool thing is that when these ionized hydrogen atoms get close enough to the flame, they combine back together to make normal hydrogen atoms again. This process releases an enormous amount of heat - up to 4,000 degrees Celsius! That's hot enough to melt most metals.

So, the hot hydrogen atoms melt the metal and also create a protective shield around the metal as it cools. This shield prevents any contamination, like oxygen from the air, from getting in and ruining the metal.

And ta-da! Our two pieces of metal are now safely joined together, thanks to the amazing atomic hydrogen welding process.

Pretty cool, huh?
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