I saw this poster yesterday on the noticeboard at work. The Cambridge Philosophical Society lectures are public. To quote the society, they are “open to all who are interested”. Sadly, even the touts had run out of tickets for this one:

Professor Peter Littlewood
Department of Physics

‘Quantum phase coherence: from coupled pendula to Bose-Einstein condensation’

Monday, 11 October 2004 8.30 p.m.
Cockcroft Lecture Theatre, New Museums Site