The Little Book of Black Holes - Steven Gubser and Frans Pretorius ****

I am always suspicious when a book has a comment on the back from a physics professor recommending it for the 'general reader', as in my experience, physics professors have little clue as to what works for a non-technical audience. But in the case of The Little Book of Black Holes, Roger Penrose has got it right... with one proviso. As long as the general reader has absorbed a good popular science title on special and general relativity first.

Without ever venturing into heavyweight maths, Steven Gubser and Frans Pretorius take us through the way that both Schwarzschild's non-rotating black hole and Kerr's rotating version were derived from Einstein's equations. And they help the reader explore many of the implications for such a body were it to exist in the real universe, from familiar aspects such as time dilation to the delightful zoom-whirl orbit. For an unfortunate individual passing towards the singularity we not only get spaghettification (though not named as such) but also consideration of what you would see when looking out of the hole and what influence matter outside a rotating black hole would have on a traveller within the event horizon.

Add in a chapter on gravitational waves, giving more detail of the mechanism that is normally provided, very timely given the recent discoveries and Nobel Prize, plus consideration of charged black holes and black hole thermodynamics, and it's clear that this is really will take the knowledge of anyone with a serious interest in black holes up to the next level. The presentation is not always 100 per cent clear - there are times when the authors think they've explained something but they haven't - yet on the whole, if you already have the basics and take it slowly, this will be a revelation.

So, The Little Book is genuinely fascinating and insightful stuff - but it is necessary to have read the background material elsewhere first. Gubser and Pretorius do provide brief introductory chapters on special and general relativity but they assume far too much existing knowledge. So I wholeheartedly recommend this book for a popular science reader who wants to get more depth on the nature of black holes and how general relativity made it possible to conjure them up - but do make sure you've read something like The Reality Frame first. This is, indeed, for the general reader as Penrose said - but only for one who is well prepared.

Hardback:

Kindle:

Using these links earns us commission at no cost to you

Review by Brian Clegg

Comments

We Are Eating the Earth - Michael Grunwald *****

If I'm honest, I assumed this would be another 'oh dear, we're horrible people who are terrible to the environment', worthily dull title - so I was surprised to be gripped from early on. The subject of the first chunk of the book is one man, Tim Searchinger's fight to take on the bizarrely unscientific assumption that held sway that making ethanol from corn, or burning wood chips instead of coal, was good for the environment. The problem with this fallacy, which seemed to have taken in the US governments, the EU, the UK and more was the assumption that (apart from carbon emitted in production) using these 'grown' fuels was carbon neutral, because the carbon came out of the air. The trouble is, this totally ignores that using land to grow fuel means either displacing land used to grow food, or displacing land that had trees, grass or other growing stuff on it. The outcome is that when we use 'E10' petrol (with 10% ethanol), or electricity produced by ...

Battle of the Big Bang - Niayesh Afshordi and Phil Harper *****

It's popular science Jim, but not as we know it. There have been plenty of popular science books about the big bang and the origins of the universe (including my own Before the Big Bang ) but this is unique. In part this is because it's bang up to date (so to speak), but more so because rather than present the theories in an approachable fashion, the book dives into the (sometimes extremely heated) disputed debates between theoreticians. It's still popular science as there's no maths, but it gives a real insight into the alternative viewpoints and depth of feeling. We begin with a rapid dash through the history of cosmological ideas, passing rapidly through the steady state/big bang debate (though not covering Hoyle's modified steady state that dealt with the 'early universe' issues), then slow down as we get into the various possibilities that would emerge once inflation arrived on the scene (including, of course, the theories that do away with inflation). ...

Why Nobody Understands Quantum Physics - Frank Verstraete and Céline Broeckaert **

It's with a heavy heart that I have to say that I could not get on with this book. The structure is all over the place, while the content veers from childish remarks to unexplained jargon. Frank Versraete is a highly regarded physicist and knows what he’s talking about - but unfortunately, physics professors are not always the best people to explain physics to a general audience and, possibly contributed to by this being a translation, I thought this book simply doesn’t work. A small issue is that there are few historical inaccuracies, but that’s often the case when scientists write history of science, and that’s not the main part of the book so I would have overlooked it. As an example, we are told that Newton's apple story originated with Voltaire. Yet Newton himself mentioned the apple story to William Stukeley in 1726. He may have made it up - but he certainly originated it, not Voltaire. We are also told that ‘Galileo discovered the counterintuitive law behind a swinging o...

Search This Blog