The neutrino’s quantum fuzziness is beginning to come into focus
Physicists set a limit on the uncertainty of the subatomic particle's position

Scientists used a superconducting sensor chip (shown) to detect the energy of atoms recoiling after they decayed within a layer of tantalum on the sensor. That measurement helped set a limit on a quantum property of neutrinos, which are also emitted in the decay.
Spencer Fretwell/Colorado School of Mines