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…

'Electric star on dancer', from J T Niblett's 'Portative electricity', 1893

Chimes at midnight

22 December 2014 by

Christmas, and what could be better at this time of year than tales of light and darkness? If you’ve decorated…

T

Principia

17 July 2014 by

It’s a happy day when I get the chance to blog about not one, but two pet topics. The manuscript…