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
How to Think About Abstract Algebra
We review the seventh of this year’s nominees for the Book of the Year
How to make: tessellating shortbread
Tasty and mathematical
Prize crossnumber, Issue 07
Win £100 of Maths Gear goodies by solving our famously fiendish crossnumber
