You are reading the word "now" right now. But what does that mean? "Now" has bedeviled philosophers, priests, and modern-day physicists from Augustine to Einstein and beyond. In Now, eminent physicist Richard A. Muller takes up the challenge. He begins with remarkably clear explanations of relativity, entropy, entanglement, the Big Bang, and more, setting the stage for his own revolutionary theory of time, one that makes testable predictions. Muller's monumental work will spark major debate about the most fundamental assumptions of our universe, and may crack one of physics' longest-standing enigmas.

About the Author
Richard A. Muller is professor of physics at the University of California, Berkeley, and the best-selling author of Physics for Future Presidents. For his outstanding work in experimental cosmology, he was awarded a 1982 MacArthur "Genius" Fellowship, and also a share of the 2015 Breakthrough Prize in Fundamental Physics for the discovery of dark energy.

Reviews
"Mind-blowing...[Muller] posits a theory that seems at once plausible and-surprisingly, for a book with equations-one worth not spoiling." -- Time
"[A] concise master class in understanding the essentials of physics." -- Lisa Jardine-Wright - Science
"Muller has taken a remarkably fresh and exciting approach to the analysis of time. With his usual clarity and wit, he proceeds from solidly established principles-each a fascinating story in its own right-but when he gets to the meaning of the flow of time and now, he forges a new path. I expect controversy!" -- Saul Perlmutter, winner of the Nobel Prize in Physics
"Can science shed light on time's dark mysteries? Richard Muller thinks it can, making his case in this clear, evocative, and wide-reaching investigation of how nature may generate the flow of time. Must-reading for all concerned with the why behind when." -- Timothy Ferris, author of Coming of Age in the Milky Way
"Richard Muller is a leading physicist, but he's also intellectually restless. That's a potent combination, with the power to generate transformative ideas about ourselves and our relationship to the universe. In Now: The Physics of Time, Muller hypothesizes how time itself might be created or destroyed. Maybe it's right. Maybe it's wrong. But along the way he's given you a master class in what time is and how and why we perceive it the way we do." -- Neil deGrasse Tyson, astrophysicist and host of Cosmos: A Spacetime Odyssey
"A provocative, strongly argued book on the fundamental nature of time. As an experimental cosmologist who has initiated some of the most important experiments of our time, Muller knows well where the limits of science are, and he keeps us interested by his ability to work close to that edge." -- Lee Smolin, author of Time Reborn
"The kind of mind-expanding read that will give you something to think about late at night. Muller's passion for his topic shines through on every page." -- Dennis Green - The Independent
"Entertaining and at times refreshingly idiosyncratic...Richard Muller's new theory deserves a serious look, and his book presents important lessons in physics and beyond." -- Martin Bojowald - Physics Today
"A thoughtful, thought-provoking and accessible book that blends concepts from relativity, thermodynamics and quantum theory to elucidate how physics got where it is, and the missteps that might have led it there." -- Richard Webb - New Scientist



Book Information
ISBN 9780393354812
Author Richard A. Muller
Format Paperback
Page Count 368
Imprint WW Norton & Co
Publisher WW Norton & Co
Weight(grams) 327g
Dimensions(mm) 211mm * 142mm * 23mm