"(Courtesy: Marc Brenner)" Stage success Damien Molony (as Werner Heisenberg), Richard Schiff (Niels Bohr – with cardigan) and Alex Kingston (Margrethe Bohr) in the revival of Michael Frayn’s Copenhagen at the Hampstead Theatre in London. (Courtesy: Marc Brenner) When Werner Heisenberg retreated at daybreak to an isolated rock on the island of Helgoland in June 1925 to contemplate his development of quantum physics, he might well have been surprised to know that this moment would be recreated by an actor perched on the back of a chair in a pool of water on a stage over 100 years later. However, this is exactly what happens in a revival of Michael Frayn’s play Copenhagen , currently at Hampstead Theatre in London . The play explores Heisenberg’s visit to see Niels Bohr in Nazi-occupied Copenhagen in 1941 and features just three characters, Heisenberg, Bohr and Bohr’s wife Margrethe.…