Normally, a plane moves along three rotational axes. “Inertia coupling” takes place when the plane inadvertently moves on two ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

It’s harder to stop something after you’ve started it because whatever activity you’ve engaged in now has momentum going for it. Conversely, it’s harder to start something before you make the ...