Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Peter James Lu, PhD is a post-doctoral research fellow in the Department of Physics and the School of Engineering and Applied Sciences at Harvard University in Cambridge, Massachusetts. He has been recognized for his discoveries of girih tiles, quasicrystal patterns in medieval Islamic architecture, early precision compound machines in ancient China, and man's first use of diamond in neolithic China.Lu was born in Cleveland, Ohio and grew up in the Philadelphia suburb of West Chester, Pennsylvania. His early childhood interest in rockhounding led to his winning national gold medals in the "Rocks, Minerals, and Fossils" event at four National Science Olympiad tournaments. Lu graduated from B. Reed Henderson high school in West Chester in 1996.