Skip to main content

To Explain the World - Steven Weinberg *****

There was a time when one approached a popular science book by a 'real' working scientist with trepidation. There was little doubt they would get the science right, but the chances are it would read more like a textbook or dull lecture notes. Thankfully, there are now a number of scientists who make pretty good writers too, but one area they tend to fall down on in history of science. I've lost count of the number of popular science titles by working scientists (including, infamously also the reboot of the Cosmos TV show, hosted by Neil deGrasse Tyson) which roll out the tedious and incorrect suggestion that Giordano Bruno was burned for his advanced scientific ideas.

Luckily, though, Steven Weinberg, as well as being a Nobel Prize winning physicist for his work on the electroweak theory (and all round nice guy), has made something of a hobby of history of science and his accounts are largely well done. I might disagree with some of his emphasis, and there are a couple of arguable points when dealing with Newton, both in his introduction of centripetal force and in the claim that the Royal Society published Principia, but on the whole the history is sound.

Perhaps surprisingly for a modern physicist, whose working life has been focussed on the peculiarities of particle theory and the significance of symmetry, Weinberg chooses to write about the period when the scientific method was evolving. So he starts with the Ancient Greeks and runs through to Newton, with only a short summary chapter filling in everything else in physics.

I have given the book five stars because I think that Weinberg builds this structure beautifully, showing how very different the ancient ideas of natural philosophy were from natural science and explaining in far more detail than I've ever seen in a popular work how the different models of the universe (what we would now call the solar system) were developed through time, including really interesting points like the way that Ptolemy-style epicycles were maintained in the early Copernican era.

He is also very good on the period when Arab scientists did original work and brought the mostly forgotten Greek works to the attention of the world. Here he treads what feels a very sound line between the older tendency to play down the Arab contribution and the more recent tendency to allow this period more of a contribution than it really had. Weinberg is perhaps a little sparse in his appreciation of the medieval period, ignoring Grosseteste and only having a passing reference  to one thing that Roger Bacon mentions, but again he then very much puts Descartes and Francis Bacon in their proper place, rather than giving too much weight to their work.

Reading this book you will find out a whole lot about Ancient Greek science plus the contributions of Galileo and Newton, and it will be a rewarding read. Don't expect a lot of context - there is only very sketchy biographical information - so the content can be a little dry in places, but Weinberg's impressive grasp of the gradual evolution of the scientific method more than makes up for this.

The only slight surprise was that the book is significantly shorter than it looks. The main text ends on page 268 of 416. The rest (apart from the index) is a series of 'technical notes' which are effectively textbook explanations of various developments in physics from some Greek basics through to Newtonian matters like planetary masses and conservation of momentum. I'll be surprised if 1 in 100 readers makes it through these. There has also been some carping that Weinberg expects ancient philosophers to take too modern a view, so tends to be over-critical - it's a matter of taste, I suspect.

So, highly recommended if you want a history of the development of physics from ancient Greece through to Newton with a lot of detail on the way that both the model of the solar system and the basics of mechanics were developed in that period. Weinberg's writing may be a little dry with its lack of biographical context, but it is rarely dull as he keeps the ideas flying.


Paperback 

Kindle 
Using these links earns us commission at no cost to you
Review by Brian Clegg

Comments

Popular posts from this blog

God: the Science, the Evidence - Michel-Yves Bolloré and Olivier Bonnassies ***

This is, to say the least, an oddity, but a fascinating one. A translation of a French bestseller, it aims to put forward an examination of the scientific evidence for the existence of a deity… and various other things, as this is a very oddly structured book (more on that in a moment). In The God Delusion , Richard Dawkins suggested that we should treat the existence of God as a scientific claim, which is exactly what the authors do reasonably well in the main part of the book. They argue that three pieces of scientific evidence in particular are supportive of the existence of a (generic) creator of the universe. These are that the universe had a beginning, the fine tuning of natural constants and the unlikeliness of life.  To support their evidence, Bolloré and Bonnassies give a reasonable introduction to thermodynamics and cosmology. They suggest that the expected heat death of the universe implies a beginning (for good thermodynamic reasons), and rightly give the impression tha...

The Infinite Alphabet - Cesar Hidalgo ****

Although taking a very new approach, this book by a physicist working in economics made me nostalgic for the business books of the 1980s. More on why in a moment, but Cesar Hidalgo sets out to explain how it is knowledge - how it is developed, how it is managed and forgotten - that makes the difference between success and failure. When I worked for a corporate in the 1980s I was very taken with Tom Peters' business books such of In Search of Excellence (with Robert Waterman), which described what made it possible for some companies to thrive and become huge while others failed. (It's interesting to look back to see a balance amongst the companies Peters thought were excellent, with successes such as Walmart and Intel, and failures such as Wang and Kodak.) In a similar way, Hidalgo uses case studies of successes and failures for both businesses and countries in making effective use of knowledge to drive economic success. When I read a Tom Peters book I was inspired and fired up...

The War on Science - Lawrence Krauss (Ed.) ****

At first glance this might appear to be yet another book on how to deal with climate change deniers and the like, such as How to Talk to a Science Denier.   It is, however, a much more significant book because it addresses the way that universities, government and pressure groups have attempted to undermine the scientific process. Conceptually I would give it five stars, but it's quite heavy going because it's a collection of around 18 essays by different academics, with many going over the same ground, so there is a lot of repetition. Even so, it's an important book. There are a few well-known names here - editor Lawrence Krauss, Richard Dawkins and Steven Pinker - but also a range of scientists (with a few philosophers) explaining how science is being damaged in academia by unscientific ideas. Many of the issues apply to other disciplines as well, but this is specifically about the impact on science, and particularly important there because of the damage it has been doing...