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

NEW! Pop-math book club
Do you have lots of unread pop math books on your shelves? Join our new monthly online book club!
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
Issue 16
Fields medals, iconic intersections, and things with silly names coming your way in our autumn 2022 issue! Plus all your favourite puzzles & columns.
You can count on Dirichlet
Counting the divisors of an integer turns out to be a rather hard problem
