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Stewart starts with a general exploration of patterns in nature--six-pointed snowflakes, feathery patterns of frost on glass, zebra stripes, ripples in the sand, honeycombs, spirals, and so on--then attempts to illustrate, in words, the mathematical principles underlying them. In the process the reader is introduced to ideas of dimensionality, symmetry in all its manifestations, patterns of tiling and packing, symmetry breaking, fractals, complexity theory and chaos. In the penultimate chapter he goes on to explain how the mathematics of earthly nature may mirror that of the universe. Finally he addresses the question of the book's title: What shape is a snowflake? You may be disappointed with the answer, but only if you don't get the joke.
Snowflake is a fascinating read, though it does requires a bit of patience. Much space in the first half of the book is given over to introducing patterns without offering many clues as to what generates them. In consequence, I found myself skipping sections to get to the juicier bits towards the end. Still, for the numerically challenged but patient reader, Snowflake is as friendly an introduction to the mathematics of nature as you could wish to find.--Chris Lavers
The book attempts to explain the formation of snowflakes in detail, taking a long journey through the processes of nature; pattern-formation, symmetry, complexity, chaos theory & more. These ideas are examined from the atomic level, through to the cosmic scale.
Whilst much of this is interesting, the book sometimes varys from over-simplicity to complex ideas, and often takes a long route to reach these concepts. I also found that sometimes the context of Ian Stewart's text (and very occasionaly, the grammer itself) could be difficult to fully understand - although this may be down to differences in the way which I look at things.
Much of this journey is neatly tied-up in the final chapter on the snowflake itself; it's just that the trip itself is not always completely satisfying.
Interesting and worth a read, but not the most engaging book I have ever read.
Why indeed, is a snowflake the overall shape it is and why is every single one unique in the detail. Stewart does what many other science writers do in popularising his subject but it is in the detail that he is unique, and fascinating.
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