More from Chalkdust
On the cover: Hydrogen orbitals
Find out more about the weird shapes on the cover of Issue 08
Forget a new £1 coin, we need a £1.23 coin
Not the new coin we want, but the new coin we need
Killing by numbers: the mathematics of warfare
A blast from the past. Modelling battle grounds from ancient Greece.
Names for large numbers
Extending the million, billion, trillion system to much, much bigger numbers
100 years with the Sierpinski triangle
Three ways to obtain and generalise a beautiful fractal
Ace
How tennis players spin and slice their serves