
Calum is a lecturer in physics at Edge Hill University where he studies topological solitons and enjoys talking about maths and physics to anyone who will listen. He can often be found on the side of a mountain or out on a bike, talking to himself about solitons.
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Oπnions: In defence of toy models
Calum gets on his soap box about toy modelsCryptic wordsearch, Issue 19
Can you solve it?On the cover: skyrmions
Sven Bjarke Gudnason and Calum Ross introduce you to the wonderful world of skyrmionsOn the cover: Apollonian packing
David Sheard explores the rich mathematics and history behind the Apollonian packing, and the cover of issue 11A mathematical view of voting systems
Why voting systems can never be fairFractograms
Hugh Duncan explores the hidden patterns of fractions