Quantum non-locality

Quantum non-locality is a phenomenon where particles become connected in such a way that the state of one instantly influences the state of another, regardless of the distance between them. When particles are entangled, measuring one particle's property (like spin or polarization) instantly determines the corresponding property of its partner, even if they are light-years apart. This correlation defies everyday ideas of local causes and effects but has been experimentally confirmed, highlighting that quantum mechanics allows for interconnectedness beyond classical notions of space and time.