3. What is the reason for the frequency of Bohr’s skiing and sailing trips?
(a) The areas are occupied by the Germans
(b) He is looking for distraction
(c) He needs the relaxation
(d) He has been busy with his science

4. What did Schrödinger’s animal have with it?
(a) A shotgun
(b) Cyanide
(c) Nothing
(d) A treat

5. What did Bohr agree not to talk about before Heisenberg arrived?
(a) Margrethe
(b) Personal matters
(c) Science
(d) Politics

6. What prevented Heisenberg’s last visit to the Bohrs?
(a) His marriage
(b) The outbreak of war
(c) The death of their child
(d) An argument

7. What does Heisenberg teach that is considered an act of resistance?
(a) Relativity
(b) Atomic physics
(c) Electro-magnetism
(d) Theoretical physics

8. What did the Bohrs invite Heisenberg to do during this visit?
(a) Stay for the weekend
(b) Live with them
(c) Discuss his most recent discoveries
(d) Come to dinner

9. In what month does Heisenberg think their 1941 meeting took place?
(a) December
(b) October
(c) November
(d) September

10. Where did Bohr have his most important insight, according to Heisenberg?
(a) Princeton
(b) Oxford
(c) Chicago
(d) Columbia

11. When did Heisenberg try and fail to see the Bohrs for the second time?
(a) 1939
(b) 1937
(c) 1940
(d) 1938

12. How often has Bohr gone skiing since Heisenberg last saw him?
(a) Not at all.
(b) Every winter
(c) Rarely
(d) Occasionally

13. What explanation does Bohr give for the number of Heisenberg’s coveted object in Germany?
(a) German publications are printing less work
(b) The Jewish scientists have fled the country
(c) The birthrate goes down during wartime
(d) German funding has been cut

14. What did Bohr do in the game of cards that Heisenberg recalls?
(a) He won with a straight
(b) He folded
(c) He intentionally bluffed
(d) He won with a fake straight

15. What activity does Margrethe suggest for the two men?
(a) Sailing
(b) Table-tennis
(c) Skiing
(d) Walking