Now The Physics Of Time (book)

***Now: The Physics Of Time*** is a book by the University of California, Berkeley physicist and cosmologist Richard A. Muller which explores the connections between various physical laws and observations and the quality that time *flows*.

## Contents

In Part I, "Amazing Time," Muller explores Einstein's special and general theories of relativity, exploring the counter intuitive implications of time dilation and classic relativity paradoxes such as the barn-pole paradox and twin paradox.

In Part II, "Broken Arrow," the hypothesized connection between entropy and time is examined and questioned heavily, with topics such as the early universe and black hole thermodynamics being explored.

In Part III, "Spooky Physics," quantum mechanical strangeness such as quantum entanglement disconcerts Einstein and the existence of time asymmetries within the fundamental laws of reality are discussed along with Wheeler and Feynman's interpretation of a positron and electron being time-reversed mirrors of each other.

In Part IV, "Physics And Reality," philosophy is delved into, touching on matters of free will and consciousness as well as exploring if there is more to the world than what is accessible through science alone. The author makes the case there is.

In Part V, "Now," the author offers their own take on how time keeps progressing forwards, stating that it does so for the same reason that space keeps expanding on account of the expansion of the universe and the Big Bang. Thus we are riding the 'wave' of time where the Big Bang is like the first splash and the universe the ripples. The author offers a falsifiable theory for the expansion of time over time.

## Time acceleration

The author believes that time itself may accelerate over time the same way that the expansion of space seems to be accelerating over time. This would in turn mean that receding galaxies move *farther* away then one would expect them too, since in the time they traveled a certain distance (factoring in the expansion of space), time acceleration would give them more time to go further. This would result in a red shift to distant galaxies not explained through velocity red shift alone.

It is very difficult to distinguish spatial red shift and temporal red shift since the spatial red shift would overwhelm and dominate the signal from temporal red shift, and so such an additional red shift has not been observed but may be possible in the near future.

## Info

### Library of Congress Cataloging-in-Publication Data

**Names:** Muller, R. (Richard), author
**Title:** Now : the physics of time / Richard A. Muller.
**Description:** First edition. | New York ; London ; W.W. Norton & Company, [2016] | ?2016 | Includes index.
**Identifiers:** LCCN 2016012496 | ISBN 9780393285239 (hardcover) | ISBN 0393285235 (hardcover)
**Subjects:** LCSH: Space and time. | Entropy. | Physics--Philosophy.
**Classification:** LCC QC173.59.S65 M85 2016 | DDC 530.11--dc LC record available at http://lccn.loc.gov/2016012496
### Publisher address

**Address I:** W.W. Norton & Company, Inc. / 500 Fifth Avenue, New York, N.Y. 10110 / www.wwnorton.com
**Address II:** W.W. Norton & Company, Ltd. / Castle House, 75/76 Wells Street, London WIT 3QT
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