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
Maths 100 Ideas in 100 Words
We review the sixth of this year’s nominees for Book of the Year
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
Geometry Puzzles in Felt Tip
We review the first of this year's nominees for the Book of the Year
Variations on Fermat: an agony in four fits
Fermat's Last Theorem with complex powers, wrapped in a story every mathematician can relate to
