A quantum particle of the microworld quantum particle can move backward even if overall it's flying forward. It's like a river, where individual currents suddenly turn against the flow, creating disorder. Previously, it was thought that such backflow didn't exceed 4% — as if only a small part of the water in a river moves backwards.

Now scientists realize: under real-world conditions, when the particle is not perfectly directed, the proportion of backward motion grows to nearly 13%. That's three times higher than the previous estimate. This discovery simplifies experiments — you don't need flawless particles, just ordinary ones. For almost a century, physicists have known about backflow's existence, but they haven't been able to directly observe it. Perhaps now this strange effect will become visible.