More from Chalkdust
That’s a Moiré
Donovan Young interferes in wave patterns
2018 Fields medal winners
Introducing the work that has won mathematics' most famous award
Top Ten: Mathematical celebration days
The definitive chart of the best dates
Superegg
How optimising the space around a circular monument is related to supereggs
What should you get a mathematician for Christmas?
Behind today's door... The Chalkdust guide to Christmas presents
Are we getting tired of Twitter?
Here is the reason why the golden era of Twitter is gone