Geetha Lavaniya

“had to prove a chain reaction was even possible. That’s what Enrico Fermi and his team were trying to do in the squash court under the football stands in Chicago. The black blocks were graphite, the mineral used to make pencil leads. Slid into holes in some of the blocks were small pieces of uranium. Fermi used graphite to slow down the speeding neutrons—he knew that neutrons would bounce off the carbon atoms that”
― Steve Sheinkin, Bomb: The Race to Build--and Steal--the World's Most Dangerous Weapon