> Photos > Shoot London > Clue D (55) CLUE Leo Szilard conceived “neutron chain reactions” whilst waiting for the lights to change on this street. The resident hairdressers are still in the dark. You are viewing: Clue D (55) Exhibition All Winning photos clue A , clue B , clue C , clue D , clue E , clue F , clue G , clue H , clue I , clue J Shoot London took place on Sat 15 July 2006 with 182 participants. VENUE Tate Modern