
On Time
The Physics That Makes the Universe Tick
$56.99
- Hardcover
360 pages
- Release Date
8 December 2026
Summary
From quantum physicist, New York Times bestselling author, and BBC host Jim Al-Khalili, essential insights into the meaning and fundamental nature of time
While we have come a long way toward deciphering the laws of the universe, many physicists still regard time to be one of the greatest unsolved mysteries. On Time provides answers to the questions about time that philosophers and scientists have been asking for millennia, such as whether it has a b…
Book Details
| ISBN-13: | 9780691267036 |
|---|---|
| ISBN-10: | 0691267030 |
| Author: | Jim Al-Khalili |
| Publisher: | Princeton University Press |
| Imprint: | Princeton University Press |
| Format: | Hardcover |
| Number of Pages: | 360 |
| Release Date: | 8 December 2026 |
| Dimensions: | 156mm x 235mm |

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Critics Review
“It is clear that Al-Khalili is a first-rate communicator; that he “spent many a night on the edge of sleep . . . [inventing] fresh analogies and thought experiments”; that he cares deeply that readers should be as awed as he is. Many will better understand — and therefore enjoy — physics after reading his book.”—Dylan Neri, Financial Times
“The triumph of Al-Khalili’s book is that it proves you can scrutinise the most complex parts of the universe without removing the colour, excitement and possibility from human life.”—Xavier Greenwood, The Observer
“Al-Khalili is known as a brilliant explainer of science… . This is heady stuff, but Al-Khalili’s characterisation is one of the clearest I have read… . Delightfully, Al-Khalili also includes what he describes as a “bonus chapter” … that asks whether time travel is possible … He executes this skilfully, treading the line between having fun with this wild topic and staying true to himself as a serious physicist.”—Joshua Howgego, New Scientist
“Unless advanced physics is your thing (I’m betting not) then I’m probably right to say that everything you think you know about time is wrong. Until now, me too! But a book published this week - On Time by physicist Jim Al-Khalili – will make your head spin faster than the hands of a watch with a dodgy mainspring that’s gone into overdrive.”—Richard Madeley, Daily Express
“Sharing fresh insights into some of the most complex and profound questions in science, On Time will forever change the way you think about the passage of time and your place within it.”—Simon Cocking, Irish Tech News
Jim Al-Khalili
Jim Al-Khalili is Distinguished Professor Emeritus of Physics at the University of Surrey and one of Britain’s leading science communicators. He has written numerous books that have been translated into twenty-six languages, among them The Joy of Science and The World According to Physics. A fellow of the Royal Society, he is a regular presenter of TV science documentaries and is best-known in the UK for his long-running BBC Radio program, The Life Scientific.
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