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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Cryptic wordsearch, Issue 19
Can you solve it?On the cover: skyrmions
Sven Bjarke Gudnason and Calum Ross introduce you to the wonderful world of skyrmionsCelebrating simple mathematical models
Hollis Williams explores the power even simple models can have in describing the world around us.Piet Hein: the pirate
Did the Danish mathematician also sail the high seas?Page 3 model: Frictional unemployment
Modelling unemployment using simple differential equations!Time turns backwards at the Spark Festival
The extreme weirdness of slow viscous flows, and why borrowers shouldn't use doggy paddle.