From Nature.
GRAVITY LEAPS INTO QUANTUM WORLD
Researchers finally measure the subtle quantum effects of fourth fundamental force.
quote:Valery Nesvizhevsky and his colleagues studied ultracold neutrons (UCNs) at the Laue-Langevin Institute in Grenoble, France. These very slow-moving, uncharged particles normally team up with protons to form the nucleus of an atom. The team isolated the neutrons from the effects of the other three forces in a specially designed detector.
By following the progress of hundreds of UCNs falling from the top of the detector to the bottom, the team found that the particles exist only at certain heights. "They do not move continuously, but rather jump from one height to another as quantum theory predicts," says Nesvizhevsky.
|
