Title: Celia's secret
Description: Who is Celia, and what are the mysterious papers found concealed under the attic floorboards of an old country house? Are they simply instructions for assembling a table-tennis table, written in idiosyncratic German, or could they contain a coded message?
Subjects: World War, 1939-1945, Nuclear weapons, History, Atoomfysica, Kernphysik, Forschung, Kernwaffe, Belletristische Darstellung
Places: Germany, Deutschland, Dänemark
People: Werner Heisenberg (1901-1976), Niels Bohr (1885-1962)