Mark Reed is a person who knows a lot about how things in the world around us work. Imagine that there are a bunch of tiny, tiny things that are too small for us to see, called atoms. Mark Reed studies these atoms and how they work together to make everything in our world.
He uses special tools and instruments to study these atoms and see how they move and interact with each other. This helps him understand how things like computers, phones, and other electronics work.
Mark Reed is like a detective who studies the clues that the atoms give him, and he uses this information to make new discoveries and create new things. He is very smart and works very hard to learn as much as he can about atoms and how they work.