He goes into detail about the topic in the chapter "Los Alamos from Below" in Surely You're Joking, Mr. Feynman! The rest of the book is a fantastic read as wel

He goes into detail about the topic in the chapter "Los Alamos from Below" in Surely You're Joking, Mr. Feynman! The rest of the book is a fantastic read as well. He talks about many interesting experiments he did (even ones involving ants), pranks he's done with safes, how to pick up women, etc.