David-mug - Chalkdust

Tanks for the memories

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
How can we tell that 2≠1?
Maynard manages to prove that 2≠1 in less space than it took Bertrand Russell to prove that 1+1=2
$Between a square rock and a hard pentagon: fractional polygons$
Between a square rock and a hard pentagon: fractional polygons
A polygon with four and a half sides?!
Constructing a sphere with 455 cups
Paper cups do not follow a hexagonal pattern and the cones do not meet at a single point, but they do make a gigantic sphere