Gravity – Brian Clegg ****

Gravity is a subject that sneaks around the senses. It’s all pervasive. It gets everywhere in your life, but on the whole you ignore it, except when it intrudes in the form of a fall. It is, of course, much more than the thing that sticks you to the surface of the planet, as it tends to be presented in children’s non-fiction books. It’s why the Earth stays in orbit. It’s why the Earth and the Sun formed in the first place. And all this from a force that is billions upon billions of times weaker than electromagnetism.

In the same way, gravity tends to be sidelined in popular science books. It creeps into books about relativity, or basic physics. But I’m not aware that it has been treated head on until now. To be honest, when presented with it, I was worried that there wouldn’t be enough material to fill a book, but Brian Clegg has defied that possibility by giving us both a historical journey through humanity’s gradual understanding that gravity existed at all (I love that Newton was criticised because his idea was ‘occult’) up to the amazing breakthrough of general relativity.

This is the most detailed explanation of general relativity I’ve seen in a popular science book, which really helped as most of the ones I’ve seen have left big holes in my understanding. It’s not too technical, though it is the heaviest part of the book and may put one or two people off. It’s followed, though, by the light relief of antigravity, a brilliant subject as it allows all the fringe ideas full rein.

All in all, it won’t appeal so much to the readers of really light weight popular science, but if you like your reading with a bit of meat on it, but without the bafflement of those books from physics professors that stray too far into the maths, this is the one for you.

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Review by Peter Spitz

Please note, this title is written by the editor of the Popular Science website. Our review is still an honest opinion – and we could hardly omit the book – but do want to make the connection clear.

Comments

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Jim Al-Khalili hosts The Life Scientific on BBC Radio 4 and has presented numerous BBC television documentaries. He is Professor of Theoretical Physics and Chair in the Public Engagement in Science at the University of Surrey, a New York Times bestselling author, and a fellow of the Royal Society. He is the author of numerous books, including Quantum: A Guide for the Perplexed; The House of Wisdom: How Arabic Science Saved Ancient Knowledge and Gave Us the Renaissance; and Life on the Edge: The Coming of Age of Quantum Biology. The paperback of his novel Sunfall is published in March 2020 by Transworld. His latest book is The World According to Physics.

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If I'm honest, I'm not a great fan of medical books, but Meera Senthilingam gives an important introduction to disease outbreaks and epidemics, giving enough detail to make sense of them without ever being too technical for the general reader. This is careful journalism, which can sometimes come across as rather dry, but that's not necessarily a bad thing given the topic.

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