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

Don’t connect four
David Budd gets carried away joining the dots. Resistance is few-tile.
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
Counting palindromes
Alex Xela shows us the world of palindromic numbers, and calculates the chances of getting one
Christmas cracker joke III
Behind today's door... A joke!
