180 years of 3D

14 August 2018 by

  This year marks the anniversary of the invention of the stereoscope. Even if you’re not sure what a stereoscope…

Lissajous curves created by a harmonograph

Swinging art

9 July 2015 by

You probably won’t be surprised to read that among my vices is a serious second-hand bookshop habit; another is a…

Who’s Herschel?

7 March 2011 by

Guest post by James Poskett It’s March 7th. Forgetting anything? A birthday perhaps? Charles Darwin’s has been and gone, 12th…