longest_hair - Chalkdust

Total Eclipse of the Hair-t. Bonnie Tyler would be proud.

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
On curvature: cars, clothoids and cartography
Issah Merchant discusses the geometric principles behind, and real-world applications of, curvature
Stopping distances in the Highway Code are wrong
An easy equation to remember for your driving theory test, with dangerous consequences
What’s your favourite number?
Favourite numbers for many are linked to birthdays or anniversaries, but here is our take on the question