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
In conversation with Jens Marklof
Bethany Clarke and Enric Solé-Farré chat to the professor and new president of the London Mathematical Society about academia, access and awards
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
That’s a Moiré
Donovan Young interferes in wave patterns
Carnival of Mathematics 162
This month’s round up of mathematical blog posts from all over the internet
