The Aharonov–Bohm interference, predicted almost 60 years ago (physicist David Bohm was at Princeton from 1947 to 1951), describes a phenomenon where a quantum wave is split into two waves that ...

it is simply impossible to picture what goes on in the quantum world. Hence my surprise (and delight) one day when flicking through a 1952 volume of the Physical Review to see that David Bohm had ...