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
On the cover: VisualPDE.com
Ben Walker, Adam Townsend & Andrew Krause invite you to play with their fun online PDE visualiser
In conversation with Cédric Villani
We feel underdressed for Breakfast at Villani's
The Chalkdust Christmas card
This year's Chalkdust puzzle Christmas card
