It’s always tempting to bask in the self-congratulatory delusion that if I just really concentrate on something hard enough I’d be able to understand it. But this book proved me wrong from the very first spacetime Penrose diagram that slowly sent my protesting brain over the event horizon and to the singularity while being simultaneously vaporized and spaghettified.

There’s an old saying I think by Stephen Hawking that every equation you include in a popular level science book will half the effective book sales. Well, Cox and Forshaw deserve credit for taking a brave plunge (and by my estimate forgoing 99.999999% of their book sales based on Hawking’s formula) because one of the highlights of this book is the scattering of equations that are accompanied by careful explanation and insight. Seven Brief Lessons on Physics by Carolo Rovelli; translators Simon Carnell and Erica Segre (UK : Allen Lane, an imprint of Penguin Books, 2015). Call number: PSE Library QC24.5 C38 2015 Stephen William Hawking was born on 8 January 1942 in Oxford, England. His parents' house was in north London, but during the second world war Oxford was considered a safer place to have babies. When he was eight, his family moved to St Albans, a town about 20 miles north of London. At eleven Stephen went to St Albans School, and then on to University College, Oxford, his father's old college. Stephen wanted to do Mathematics, although his father would have preferred medicine. Mathematics was not available at University College, so he did Physics instead. After three years and not very much work he was awarded a first class honours degree in Natural Science. Quantum mechanics implies that the whole space is filled with pairs of virtual particles and antiparticles, which are constantly materializing in pairs, separating, and then coming together again and annihilating each other.

The first sign I was wrong is when I noticed a myriad of Penrose diagrams throughout the book - that is not something I’ve see in popular science books before. Sometimes you will get spacetime diagrams and usually very simple ones at that. As someone who studied physics 20 years ago as an undergraduate (and took a subject on relativity) I can honestly say I’d never seen a Penrose diagram before and I found them a really useful learning tool in the book. As I said, I’ve read a lot of books on this topic and adjacent ones (Thorne, Greene, Smolin, Carrol, etc) and I was genuinely glued to this one. You can learn about Einstein and how Einstein was the first to think about reality differently and how that led him to write his theory of relativity and everything. The author closes this book with a chapter on his philosophical view concerning science and humanity.

At the same time, it takes several days to get enough data to get a clear picture over a long period. So it’s an enormous task that takes place over years and years. Title summary: “Discusses the concept of gravity from its earliest recognition in 1666 to the discovery of gravitational waves in 2015, and explains why gravity holds the key to understanding the nature of time and the origin of the universe.” This is the ultimate vindication of research for research’s sake: two of the biggest problems in science and technology have turned out to be intimately related. The challenge of building a quantum computer is very similar to the challenge of writing down the correct theory of quantum gravity. This is one reason why it is vital that we continue to support the most esoteric scientific endeavours. Nobody could have predicted such a link. At the end of the chapter, you will understand everything, and everything will be pretty clear to you, whatever he wanted to explain. What I love about the book is that the personality of Stephen Hawking comes across, and you enjoy reading it. It’s such a beautiful right to read this book. Also, it shows that he was a very humorous person and funny because many times in this book, he gets into this self-deprecating humor thing.

A singularity is what you end up with when a giant star is compressed to an unimaginably small point."