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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.

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
Making a Möbius strip
Sophie Bleau chops up, unravels, and squeezes the torus into shape
On the cover: Harriss spiral
Find out more about the spiral trees on the cover of Issue 09
Thoughts on the crossnumber
Did you use meta-logic to solve the crossnumber?

More from Chalkdust

Oπnions: In defence of toy models

Cryptic wordsearch, Issue 19

On the cover: skyrmions

Making a Möbius strip

On the cover: Harriss spiral

Thoughts on the crossnumber