Everett Collection Inc/Alamy
In the comics, Thor spins his hammer very fast and hurls it into the air, allowing him to be pulled into flight. Could you make a machine that “flew” using such a principle?
Alex McDowell
London, UK
When we jump, our legs propel our upper body upwards and it pulls our legs up with it. Hence our legs are, briefly, pulled into flight.
Cyrano de Bergerac proposed, in A Voyage to the Moon (published in 1656), sitting on an iron plate and repeatedly throwing magnets up, so they would pull the plate up, and then catching them.
Thor and Cyrano’s…


