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
Dear Dirichlet, Issue 16
Girl guides, cooking, and public transport find their way into the prof's postbox this issue.
Christmas puzzle #2: A Christmas nonogram
Puzzle #2 in our 2020 Christmas puzzle series
In conversation with Bernard Silverman
We chat to the chief scientific advisor to the Home Office about the role of scientists and mathematicians in politics
