"In this extraordinary volume, Krishan Kumar provides us with a brilliant tour of some of history's most important empires, demonstrating . . .
"Important and elegantly written."--Jason Zweig, Wall Street Journal
"Articulate, accessible, and engaging, this book is recommended for students as well as seasoned scholars."--Roger Finke, Pennsylvania State University
"With breadth and depth, this insightful book provides a comprehensive survey of x-ray physics and x-ray optics. It fills a void in the pedagogy . . .