[Mathematical equations in memory of James Clerk Maxwell]

Colour:

Wikimedia:

Flickr:

See also...
The Pingus on Flickr
Aberdeen, United Kingdom
Nick Harrison on Flickr
Cambridge, United Kingdom
Seth Anderson on Flickr
London, United Kingdom
Spudgun67 on Wikimedia Commons
London, United Kingdom
gnomonic on Flickr
Edinburgh, United Kingdom
watty62 on Wikimedia Commons
Aberdeen, United Kingdom