Which Michael Frayn play explores Bohr's 1941 meeting with Heisenberg?

Michael Frayn’s play about Niels Bohr’s 1941 meeting with Werner Heisenberg is *Copenhagen*.

The play premiered at London’s National Theatre in 1998 and turns the wartime meeting into a drama about memory, morality, scientific responsibility, and the uncertain motives of its participants. Heisenberg had once been Bohr’s student, making their encounter both a personal reunion and a meeting between scientists on opposite sides of World War II.

Frayn presents several possible reconstructions of what the two men discussed, rather than claiming that the historical record provides a single definitive version. The play was inspired partly by debates over Heisenberg’s role in Germany’s nuclear research and whether he had deliberately hindered the German bomb effort.

A common mix-up is confusing the title with a physics term: Copenhagen is the name of the play and the city where the meeting occurred. The play later became a 2002 television film and won the 2000 Tony Award for Best Play.