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?
A daredevil’s disaster
Donovan Young goes round the bend exploring what happens when the loop-the-loop goes wrong
On the cover: skyrmions
Sven Bjarke Gudnason and Calum Ross introduce you to the wonderful world of skyrmions
A Compendium of Mathematical Methods
We review the second of this year's nominees for the Book of the Year
Prize crossnumber, Issue 05
Win £100 of Maths Gear goodies by solving our famously fiendish crossnumber
