tikz3 - Chalkdust

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?
Twist and shout! …and we’re fresh out of shout*
Henry Jaspars tries to untangle a mixed-up drinks order
On the cover: skyrmions
Sven Bjarke Gudnason and Calum Ross introduce you to the wonderful world of skyrmions
Top Ten: pictures of scorpions
The definitive chart of the best pictures of scorpions
You can count on Dirichlet
Counting the divisors of an integer turns out to be a rather hard problem