Can you reproduce this drawing?
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Calum gets on his soap box about toy models
That’s a Moiré
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... and how Chalkdust played a role in one of them
Our favourite (and not-so-favourite) Euler equations
A collection of our favourite and least favourite things named after Euler, from issue 07
The Mpemba paradox
Why does warm water freeze faster than cold water?
Will the Universe actually end in a big rip?
What the Guardian got wrong...