To his many Nobel Prize-winning colleagues, Georg Placzek was a physicist
of boundless importance. It was not because of a breakthrough discovery on
his part, or because he published widely, but because he tended to be the
man with the right wits at the right time. At Los Alamos, New Mexico, on
July 16th, 1945, he was the only Czech present for the detonation of the
first nuclear explosion – an event he had helped to create.