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

Chalkdust issue 22 – Coming 17 November
Pre-order your copy of issue 22 now!
How to write a crossnumber
Matthew Scroggs explains how to get digits all riled up
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
Finding the edge of your images
How can we identify objects in photos, to diagnose cancer or predict the weather? Using gradients!
