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?
What’s hot and what’s not, Issue 19
Fashion is fleeting, Chalkdust regulars are not.
On the cover: skyrmions
Sven Bjarke Gudnason and Calum Ross introduce you to the wonderful world of skyrmions
In conversation with Dominique Sleet
Ellen Jolley learns how to run a maths outreach programme
The n days of Christmas
Get into the ChristMATHS spirit with the maths behind the popular Christmas carol!
