fire9 - Chalkdust

The centred square numbers can be built from a central dot and four copies of a triangle number.

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.

The secret life of words
Barry Pawlik builds words and sentences from doubles
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
Do the shuffle: finding π in your playlists
Henry Jaspars really likes Nick and Norah’s infinite playlist.
The mathematics of brewing
While drinking beer in your favourite pub, have you ever wondered how it is produced? Find here some of the science and mathematics behind brewing.

More from Chalkdust

The secret life of words

Oπnions: In defence of toy models

Cryptic wordsearch, Issue 19

On the cover: skyrmions

Do the shuffle: finding π in your playlists

The mathematics of brewing