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.
More from Chalkdust

Oπnions: In defence of toy models
Calum gets on his soap box about toy models
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 skyrmions
Dear Dirichlet, Issue 13
Parishoners, partners and puzzled playwrights have written in to the professor's postbox this issue
You don’t need permission to be a great mathematician!
Nira Chamberlain, one of the UK's top 100 scientists, shares his experiences as a black mathematician.
Roots: the legacy of Fibonacci
More than spirals and rabbits, Fibonacci gave us something much more fundamental.
